260520040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{1063}}^1$

素因数の和:1642

約数の個数: 64

約数和(自身を含む): 641208960

約数和(自身を除く): 380688920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 557, 1063, 1114, 2126, 2228, 2785, 4252, 4456, 5315, 5570, 6127, 8504, 10630, 11140, 11693, 12254, 21260, 22280, 23386, 24508, 30635, 42520, 46772, 49016, 58465, 61270, 93544, 116930, 122540, 233860, 245080, 467720, 592091, 1184182, 2368364, 2960455, 4736728, 5920910, 6513001, 11841820, 13026002, 23683640, 26052004, 32565005, 52104008, 65130010, 130260020, 260520040]

約数ペア:

[(1, 260520040), (2, 130260020), (4, 65130010), (5, 52104008), (8, 32565005), (10, 26052004), (11, 23683640), (20, 13026002), (22, 11841820), (40, 6513001), (44, 5920910), (55, 4736728), (88, 2960455), (110, 2368364), (220, 1184182), (440, 592091), (557, 467720), (1063, 245080), (1114, 233860), (2126, 122540), (2228, 116930), (2785, 93544), (4252, 61270), (4456, 58465), (5315, 49016), (5570, 46772), (6127, 42520), (8504, 30635), (10630, 24508), (11140, 23386), (11693, 22280), (12254, 21260)]