28718040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:517

約数の個数: 128

約数和(自身を含む): 95256000

約数和(自身を除く): 66537960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 41, 52, 60, 65, 78, 82, 104, 120, 123, 130, 156, 164, 195, 205, 246, 260, 312, 328, 390, 410, 449, 492, 520, 533, 615, 780, 820, 898, 984, 1066, 1230, 1347, 1560, 1599, 1640, 1796, 2132, 2245, 2460, 2665, 2694, 3198, 3592, 4264, 4490, 4920, 5330, 5388, 5837, 6396, 6735, 7995, 8980, 10660, 10776, 11674, 12792, 13470, 15990, 17511, 17960, 18409, 21320, 23348, 26940, 29185, 31980, 35022, 36818, 46696, 53880, 55227, 58370, 63960, 70044, 73636, 87555, 92045, 110454, 116740, 140088, 147272, 175110, 184090, 220908, 233480, 239317, 276135, 350220, 368180, 441816, 478634, 552270, 700440, 717951, 736360, 957268, 1104540, 1196585, 1435902, 1914536, 2209080, 2393170, 2871804, 3589755, 4786340, 5743608, 7179510, 9572680, 14359020, 28718040]

約数ペア:

[(1, 28718040), (2, 14359020), (3, 9572680), (4, 7179510), (5, 5743608), (6, 4786340), (8, 3589755), (10, 2871804), (12, 2393170), (13, 2209080), (15, 1914536), (20, 1435902), (24, 1196585), (26, 1104540), (30, 957268), (39, 736360), (40, 717951), (41, 700440), (52, 552270), (60, 478634), (65, 441816), (78, 368180), (82, 350220), (104, 276135), (120, 239317), (123, 233480), (130, 220908), (156, 184090), (164, 175110), (195, 147272), (205, 140088), (246, 116740), (260, 110454), (312, 92045), (328, 87555), (390, 73636), (410, 70044), (449, 63960), (492, 58370), (520, 55227), (533, 53880), (615, 46696), (780, 36818), (820, 35022), (898, 31980), (984, 29185), (1066, 26940), (1230, 23348), (1347, 21320), (1560, 18409), (1599, 17960), (1640, 17511), (1796, 15990), (2132, 13470), (2245, 12792), (2460, 11674), (2665, 10776), (2694, 10660), (3198, 8980), (3592, 7995), (4264, 6735), (4490, 6396), (4920, 5837), (5330, 5388)]