20215470720

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:715

約数の個数: 256

約数和(自身を含む): 65366496000

約数和(自身を除く): 45151025280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 157, 160, 192, 199, 240, 314, 320, 337, 384, 398, 471, 480, 597, 628, 640, 674, 785, 796, 942, 960, 995, 1011, 1194, 1256, 1348, 1570, 1592, 1685, 1884, 1920, 1990, 2022, 2355, 2388, 2512, 2696, 2985, 3140, 3184, 3370, 3768, 3980, 4044, 4710, 4776, 5024, 5055, 5392, 5970, 6280, 6368, 6740, 7536, 7960, 8088, 9420, 9552, 10048, 10110, 10784, 11940, 12560, 12736, 13480, 15072, 15920, 16176, 18840, 19104, 20096, 20220, 21568, 23880, 25120, 25472, 26960, 30144, 31243, 31840, 32352, 37680, 38208, 40440, 43136, 47760, 50240, 52909, 53920, 60288, 62486, 63680, 64704, 67063, 75360, 76416, 80880, 93729, 95520, 100480, 105818, 107840, 124972, 127360, 129408, 134126, 150720, 156215, 158727, 161760, 187458, 191040, 201189, 211636, 215680, 249944, 264545, 268252, 301440, 312430, 317454, 323520, 335315, 374916, 382080, 402378, 423272, 468645, 499888, 529090, 536504, 624860, 634908, 647040, 670630, 749832, 793635, 804756, 846544, 937290, 999776, 1005945, 1058180, 1073008, 1249720, 1269816, 1341260, 1499664, 1587270, 1609512, 1693088, 1874580, 1999552, 2011890, 2116360, 2146016, 2499440, 2539632, 2682520, 2999328, 3174540, 3219024, 3386176, 3749160, 3999104, 4023780, 4232720, 4292032, 4998880, 5079264, 5365040, 5998656, 6349080, 6438048, 6772352, 7498320, 8047560, 8465440, 8584064, 9997760, 10158528, 10528891, 10730080, 11997312, 12698160, 12876096, 14996640, 16095120, 16930880, 19995520, 20317056, 21057782, 21460160, 25396320, 25752192, 29993280, 31586673, 32190240, 33861760, 42115564, 42920320, 50792640, 52644455, 59986560, 63173346, 64380480, 84231128, 101585280, 105288910, 126346692, 128760960, 157933365, 168462256, 210577820, 252693384, 315866730, 336924512, 421155640, 505386768, 631733460, 673849024, 842311280, 1010773536, 1263466920, 1347698048, 1684622560, 2021547072, 2526933840, 3369245120, 4043094144, 5053867680, 6738490240, 10107735360, 20215470720]

約数ペア:

[(1, 20215470720), (2, 10107735360), (3, 6738490240), (4, 5053867680), (5, 4043094144), (6, 3369245120), (8, 2526933840), (10, 2021547072), (12, 1684622560), (15, 1347698048), (16, 1263466920), (20, 1010773536), (24, 842311280), (30, 673849024), (32, 631733460), (40, 505386768), (48, 421155640), (60, 336924512), (64, 315866730), (80, 252693384), (96, 210577820), (120, 168462256), (128, 157933365), (157, 128760960), (160, 126346692), (192, 105288910), (199, 101585280), (240, 84231128), (314, 64380480), (320, 63173346), (337, 59986560), (384, 52644455), (398, 50792640), (471, 42920320), (480, 42115564), (597, 33861760), (628, 32190240), (640, 31586673), (674, 29993280), (785, 25752192), (796, 25396320), (942, 21460160), (960, 21057782), (995, 20317056), (1011, 19995520), (1194, 16930880), (1256, 16095120), (1348, 14996640), (1570, 12876096), (1592, 12698160), (1685, 11997312), (1884, 10730080), (1920, 10528891), (1990, 10158528), (2022, 9997760), (2355, 8584064), (2388, 8465440), (2512, 8047560), (2696, 7498320), (2985, 6772352), (3140, 6438048), (3184, 6349080), (3370, 5998656), (3768, 5365040), (3980, 5079264), (4044, 4998880), (4710, 4292032), (4776, 4232720), (5024, 4023780), (5055, 3999104), (5392, 3749160), (5970, 3386176), (6280, 3219024), (6368, 3174540), (6740, 2999328), (7536, 2682520), (7960, 2539632), (8088, 2499440), (9420, 2146016), (9552, 2116360), (10048, 2011890), (10110, 1999552), (10784, 1874580), (11940, 1693088), (12560, 1609512), (12736, 1587270), (13480, 1499664), (15072, 1341260), (15920, 1269816), (16176, 1249720), (18840, 1073008), (19104, 1058180), (20096, 1005945), (20220, 999776), (21568, 937290), (23880, 846544), (25120, 804756), (25472, 793635), (26960, 749832), (30144, 670630), (31243, 647040), (31840, 634908), (32352, 624860), (37680, 536504), (38208, 529090), (40440, 499888), (43136, 468645), (47760, 423272), (50240, 402378), (52909, 382080), (53920, 374916), (60288, 335315), (62486, 323520), (63680, 317454), (64704, 312430), (67063, 301440), (75360, 268252), (76416, 264545), (80880, 249944), (93729, 215680), (95520, 211636), (100480, 201189), (105818, 191040), (107840, 187458), (124972, 161760), (127360, 158727), (129408, 156215), (134126, 150720)]