21454560

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:385

約数の個数: 144

約数和(自身を含む): 75007296

約数和(自身を除く): 53552736

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 96, 120, 141, 144, 160, 180, 188, 235, 240, 282, 288, 317, 360, 376, 423, 470, 480, 564, 634, 705, 720, 752, 846, 940, 951, 1128, 1268, 1410, 1440, 1504, 1585, 1692, 1880, 1902, 2115, 2256, 2536, 2820, 2853, 3170, 3384, 3760, 3804, 4230, 4512, 4755, 5072, 5640, 5706, 6340, 6768, 7520, 7608, 8460, 9510, 10144, 11280, 11412, 12680, 13536, 14265, 14899, 15216, 16920, 19020, 22560, 22824, 25360, 28530, 29798, 30432, 33840, 38040, 44697, 45648, 50720, 57060, 59596, 67680, 74495, 76080, 89394, 91296, 114120, 119192, 134091, 148990, 152160, 178788, 223485, 228240, 238384, 268182, 297980, 357576, 446970, 456480, 476768, 536364, 595960, 670455, 715152, 893940, 1072728, 1191920, 1340910, 1430304, 1787880, 2145456, 2383840, 2681820, 3575760, 4290912, 5363640, 7151520, 10727280, 21454560]

約数ペア:

[(1, 21454560), (2, 10727280), (3, 7151520), (4, 5363640), (5, 4290912), (6, 3575760), (8, 2681820), (9, 2383840), (10, 2145456), (12, 1787880), (15, 1430304), (16, 1340910), (18, 1191920), (20, 1072728), (24, 893940), (30, 715152), (32, 670455), (36, 595960), (40, 536364), (45, 476768), (47, 456480), (48, 446970), (60, 357576), (72, 297980), (80, 268182), (90, 238384), (94, 228240), (96, 223485), (120, 178788), (141, 152160), (144, 148990), (160, 134091), (180, 119192), (188, 114120), (235, 91296), (240, 89394), (282, 76080), (288, 74495), (317, 67680), (360, 59596), (376, 57060), (423, 50720), (470, 45648), (480, 44697), (564, 38040), (634, 33840), (705, 30432), (720, 29798), (752, 28530), (846, 25360), (940, 22824), (951, 22560), (1128, 19020), (1268, 16920), (1410, 15216), (1440, 14899), (1504, 14265), (1585, 13536), (1692, 12680), (1880, 11412), (1902, 11280), (2115, 10144), (2256, 9510), (2536, 8460), (2820, 7608), (2853, 7520), (3170, 6768), (3384, 6340), (3760, 5706), (3804, 5640), (4230, 5072), (4512, 4755)]