289556740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{42457}}^1$

素因数の和:42508

約数の個数: 48

約数和(自身を含む): 684762624

約数和(自身を除く): 395205884

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 42457, 84914, 169828, 212285, 424570, 467027, 849140, 934054, 1316167, 1868108, 2335135, 2632334, 4670270, 5264668, 6580835, 9340540, 13161670, 14477837, 26323340, 28955674, 57911348, 72389185, 144778370, 289556740]

約数ペア:

[(1, 289556740), (2, 144778370), (4, 72389185), (5, 57911348), (10, 28955674), (11, 26323340), (20, 14477837), (22, 13161670), (31, 9340540), (44, 6580835), (55, 5264668), (62, 4670270), (110, 2632334), (124, 2335135), (155, 1868108), (220, 1316167), (310, 934054), (341, 849140), (620, 467027), (682, 424570), (1364, 212285), (1705, 169828), (3410, 84914), (6820, 42457)]