20662980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:533

約数の個数: 96

約数和(自身を含む): 63504000

約数和(自身を除く): 42841020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 59, 60, 65, 78, 118, 130, 156, 177, 195, 236, 260, 295, 354, 390, 449, 590, 708, 767, 780, 885, 898, 1180, 1347, 1534, 1770, 1796, 2245, 2301, 2694, 3068, 3540, 3835, 4490, 4602, 5388, 5837, 6735, 7670, 8980, 9204, 11505, 11674, 13470, 15340, 17511, 23010, 23348, 26491, 26940, 29185, 35022, 46020, 52982, 58370, 70044, 79473, 87555, 105964, 116740, 132455, 158946, 175110, 264910, 317892, 344383, 350220, 397365, 529820, 688766, 794730, 1033149, 1377532, 1589460, 1721915, 2066298, 3443830, 4132596, 5165745, 6887660, 10331490, 20662980]

約数ペア:

[(1, 20662980), (2, 10331490), (3, 6887660), (4, 5165745), (5, 4132596), (6, 3443830), (10, 2066298), (12, 1721915), (13, 1589460), (15, 1377532), (20, 1033149), (26, 794730), (30, 688766), (39, 529820), (52, 397365), (59, 350220), (60, 344383), (65, 317892), (78, 264910), (118, 175110), (130, 158946), (156, 132455), (177, 116740), (195, 105964), (236, 87555), (260, 79473), (295, 70044), (354, 58370), (390, 52982), (449, 46020), (590, 35022), (708, 29185), (767, 26940), (780, 26491), (885, 23348), (898, 23010), (1180, 17511), (1347, 15340), (1534, 13470), (1770, 11674), (1796, 11505), (2245, 9204), (2301, 8980), (2694, 7670), (3068, 6735), (3540, 5837), (3835, 5388), (4490, 4602)]