20723040

素因数分解:

$2^5\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:84

約数の個数: 288

約数和(自身を含む): 80904096

約数和(自身を除く): 60181056

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 41, 45, 48, 52, 54, 60, 65, 72, 78, 80, 81, 82, 90, 96, 104, 108, 117, 120, 123, 130, 135, 144, 156, 160, 162, 164, 180, 195, 205, 208, 216, 234, 240, 243, 246, 260, 270, 288, 312, 324, 328, 351, 360, 369, 390, 405, 410, 416, 432, 468, 480, 486, 492, 520, 533, 540, 585, 615, 624, 648, 656, 702, 720, 738, 780, 810, 820, 864, 936, 972, 984, 1040, 1053, 1066, 1080, 1107, 1170, 1215, 1230, 1248, 1296, 1312, 1404, 1440, 1476, 1560, 1599, 1620, 1640, 1755, 1845, 1872, 1944, 1968, 2080, 2106, 2132, 2160, 2214, 2340, 2430, 2460, 2592, 2665, 2808, 2952, 3120, 3159, 3198, 3240, 3280, 3321, 3510, 3690, 3744, 3888, 3936, 4212, 4264, 4320, 4428, 4680, 4797, 4860, 4920, 5265, 5330, 5535, 5616, 5904, 6240, 6318, 6396, 6480, 6560, 6642, 7020, 7380, 7776, 7995, 8424, 8528, 8856, 9360, 9594, 9720, 9840, 9963, 10530, 10660, 11070, 11232, 11808, 12636, 12792, 12960, 13284, 14040, 14391, 14760, 15795, 15990, 16605, 16848, 17056, 17712, 18720, 19188, 19440, 19680, 19926, 21060, 21320, 22140, 23985, 25272, 25584, 26568, 28080, 28782, 29520, 31590, 31980, 33210, 33696, 35424, 38376, 38880, 39852, 42120, 42640, 43173, 44280, 47970, 49815, 50544, 51168, 53136, 56160, 57564, 59040, 63180, 63960, 66420, 71955, 76752, 79704, 84240, 85280, 86346, 88560, 95940, 99630, 101088, 106272, 115128, 126360, 127920, 129519, 132840, 143910, 153504, 159408, 168480, 172692, 177120, 191880, 199260, 215865, 230256, 252720, 255840, 259038, 265680, 287820, 318816, 345384, 383760, 398520, 431730, 460512, 505440, 518076, 531360, 575640, 647595, 690768, 767520, 797040, 863460, 1036152, 1151280, 1295190, 1381536, 1594080, 1726920, 2072304, 2302560, 2590380, 3453840, 4144608, 5180760, 6907680, 10361520, 20723040]

約数ペア:

[(1, 20723040), (2, 10361520), (3, 6907680), (4, 5180760), (5, 4144608), (6, 3453840), (8, 2590380), (9, 2302560), (10, 2072304), (12, 1726920), (13, 1594080), (15, 1381536), (16, 1295190), (18, 1151280), (20, 1036152), (24, 863460), (26, 797040), (27, 767520), (30, 690768), (32, 647595), (36, 575640), (39, 531360), (40, 518076), (41, 505440), (45, 460512), (48, 431730), (52, 398520), (54, 383760), (60, 345384), (65, 318816), (72, 287820), (78, 265680), (80, 259038), (81, 255840), (82, 252720), (90, 230256), (96, 215865), (104, 199260), (108, 191880), (117, 177120), (120, 172692), (123, 168480), (130, 159408), (135, 153504), (144, 143910), (156, 132840), (160, 129519), (162, 127920), (164, 126360), (180, 115128), (195, 106272), (205, 101088), (208, 99630), (216, 95940), (234, 88560), (240, 86346), (243, 85280), (246, 84240), (260, 79704), (270, 76752), (288, 71955), (312, 66420), (324, 63960), (328, 63180), (351, 59040), (360, 57564), (369, 56160), (390, 53136), (405, 51168), (410, 50544), (416, 49815), (432, 47970), (468, 44280), (480, 43173), (486, 42640), (492, 42120), (520, 39852), (533, 38880), (540, 38376), (585, 35424), (615, 33696), (624, 33210), (648, 31980), (656, 31590), (702, 29520), (720, 28782), (738, 28080), (780, 26568), (810, 25584), (820, 25272), (864, 23985), (936, 22140), (972, 21320), (984, 21060), (1040, 19926), (1053, 19680), (1066, 19440), (1080, 19188), (1107, 18720), (1170, 17712), (1215, 17056), (1230, 16848), (1248, 16605), (1296, 15990), (1312, 15795), (1404, 14760), (1440, 14391), (1476, 14040), (1560, 13284), (1599, 12960), (1620, 12792), (1640, 12636), (1755, 11808), (1845, 11232), (1872, 11070), (1944, 10660), (1968, 10530), (2080, 9963), (2106, 9840), (2132, 9720), (2160, 9594), (2214, 9360), (2340, 8856), (2430, 8528), (2460, 8424), (2592, 7995), (2665, 7776), (2808, 7380), (2952, 7020), (3120, 6642), (3159, 6560), (3198, 6480), (3240, 6396), (3280, 6318), (3321, 6240), (3510, 5904), (3690, 5616), (3744, 5535), (3888, 5330), (3936, 5265), (4212, 4920), (4264, 4860), (4320, 4797), (4428, 4680)]