20507960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{367}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 50872320

約数和(自身を除く): 30364360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 127, 220, 254, 367, 440, 508, 635, 734, 1016, 1270, 1397, 1468, 1835, 2540, 2794, 2936, 3670, 4037, 5080, 5588, 6985, 7340, 8074, 11176, 13970, 14680, 16148, 20185, 27940, 32296, 40370, 46609, 55880, 80740, 93218, 161480, 186436, 233045, 372872, 466090, 512699, 932180, 1025398, 1864360, 2050796, 2563495, 4101592, 5126990, 10253980, 20507960]

約数ペア:

[(1, 20507960), (2, 10253980), (4, 5126990), (5, 4101592), (8, 2563495), (10, 2050796), (11, 1864360), (20, 1025398), (22, 932180), (40, 512699), (44, 466090), (55, 372872), (88, 233045), (110, 186436), (127, 161480), (220, 93218), (254, 80740), (367, 55880), (440, 46609), (508, 40370), (635, 32296), (734, 27940), (1016, 20185), (1270, 16148), (1397, 14680), (1468, 13970), (1835, 11176), (2540, 8074), (2794, 7340), (2936, 6985), (3670, 5588), (4037, 5080)]