19997128320

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{3797}}^1$

素因数の和:4043

約数の個数: 256

約数和(自身を含む): 68987479680

約数和(自身を除く): 48990351360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 211, 240, 260, 312, 320, 384, 390, 416, 422, 480, 520, 624, 633, 640, 780, 832, 844, 960, 1040, 1055, 1248, 1266, 1560, 1664, 1688, 1920, 2080, 2110, 2496, 2532, 2743, 3120, 3165, 3376, 3797, 4160, 4220, 4992, 5064, 5486, 6240, 6330, 6752, 7594, 8229, 8320, 8440, 10128, 10972, 11391, 12480, 12660, 13504, 13715, 15188, 16458, 16880, 18985, 20256, 21944, 22782, 24960, 25320, 27008, 27430, 30376, 32916, 33760, 37970, 40512, 41145, 43888, 45564, 49361, 50640, 54860, 56955, 60752, 65832, 67520, 75940, 81024, 82290, 87776, 91128, 98722, 101280, 109720, 113910, 121504, 131664, 135040, 148083, 151880, 164580, 175552, 182256, 197444, 202560, 219440, 227820, 243008, 246805, 263328, 296166, 303760, 329160, 351104, 364512, 394888, 405120, 438880, 455640, 486016, 493610, 526656, 592332, 607520, 658320, 729024, 740415, 789776, 801167, 877760, 911280, 987220, 1053312, 1184664, 1215040, 1316640, 1458048, 1480830, 1579552, 1602334, 1755520, 1822560, 1974440, 2369328, 2403501, 2430080, 2633280, 2961660, 3159104, 3204668, 3645120, 3948880, 4005835, 4738656, 4807002, 5266560, 5923320, 6318208, 6409336, 7290240, 7897760, 8011670, 9477312, 9614004, 10415171, 11846640, 12017505, 12818672, 15795520, 16023340, 18954624, 19228008, 20830342, 23693280, 24035010, 25637344, 31245513, 31591040, 32046680, 38456016, 41660684, 47386560, 48070020, 51274688, 52075855, 62491026, 64093360, 76912032, 83321368, 94773120, 96140040, 102549376, 104151710, 124982052, 128186720, 153824064, 156227565, 166642736, 192280080, 208303420, 249964104, 256373440, 307648128, 312455130, 333285472, 384560160, 416606840, 499928208, 512746880, 624910260, 666570944, 769120320, 833213680, 999856416, 1249820520, 1333141888, 1538240640, 1666427360, 1999712832, 2499641040, 3332854720, 3999425664, 4999282080, 6665709440, 9998564160, 19997128320]

約数ペア:

[(1, 19997128320), (2, 9998564160), (3, 6665709440), (4, 4999282080), (5, 3999425664), (6, 3332854720), (8, 2499641040), (10, 1999712832), (12, 1666427360), (13, 1538240640), (15, 1333141888), (16, 1249820520), (20, 999856416), (24, 833213680), (26, 769120320), (30, 666570944), (32, 624910260), (39, 512746880), (40, 499928208), (48, 416606840), (52, 384560160), (60, 333285472), (64, 312455130), (65, 307648128), (78, 256373440), (80, 249964104), (96, 208303420), (104, 192280080), (120, 166642736), (128, 156227565), (130, 153824064), (156, 128186720), (160, 124982052), (192, 104151710), (195, 102549376), (208, 96140040), (211, 94773120), (240, 83321368), (260, 76912032), (312, 64093360), (320, 62491026), (384, 52075855), (390, 51274688), (416, 48070020), (422, 47386560), (480, 41660684), (520, 38456016), (624, 32046680), (633, 31591040), (640, 31245513), (780, 25637344), (832, 24035010), (844, 23693280), (960, 20830342), (1040, 19228008), (1055, 18954624), (1248, 16023340), (1266, 15795520), (1560, 12818672), (1664, 12017505), (1688, 11846640), (1920, 10415171), (2080, 9614004), (2110, 9477312), (2496, 8011670), (2532, 7897760), (2743, 7290240), (3120, 6409336), (3165, 6318208), (3376, 5923320), (3797, 5266560), (4160, 4807002), (4220, 4738656), (4992, 4005835), (5064, 3948880), (5486, 3645120), (6240, 3204668), (6330, 3159104), (6752, 2961660), (7594, 2633280), (8229, 2430080), (8320, 2403501), (8440, 2369328), (10128, 1974440), (10972, 1822560), (11391, 1755520), (12480, 1602334), (12660, 1579552), (13504, 1480830), (13715, 1458048), (15188, 1316640), (16458, 1215040), (16880, 1184664), (18985, 1053312), (20256, 987220), (21944, 911280), (22782, 877760), (24960, 801167), (25320, 789776), (27008, 740415), (27430, 729024), (30376, 658320), (32916, 607520), (33760, 592332), (37970, 526656), (40512, 493610), (41145, 486016), (43888, 455640), (45564, 438880), (49361, 405120), (50640, 394888), (54860, 364512), (56955, 351104), (60752, 329160), (65832, 303760), (67520, 296166), (75940, 263328), (81024, 246805), (82290, 243008), (87776, 227820), (91128, 219440), (98722, 202560), (101280, 197444), (109720, 182256), (113910, 175552), (121504, 164580), (131664, 151880), (135040, 148083)]