18625480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{277}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 43109460

約数和(自身を除く): 24483980

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 277, 328, 410, 554, 820, 1108, 1385, 1640, 1681, 2216, 2770, 3362, 5540, 6724, 8405, 11080, 11357, 13448, 16810, 22714, 33620, 45428, 56785, 67240, 90856, 113570, 227140, 454280, 465637, 931274, 1862548, 2328185, 3725096, 4656370, 9312740, 18625480]

約数ペア:

[(1, 18625480), (2, 9312740), (4, 4656370), (5, 3725096), (8, 2328185), (10, 1862548), (20, 931274), (40, 465637), (41, 454280), (82, 227140), (164, 113570), (205, 90856), (277, 67240), (328, 56785), (410, 45428), (554, 33620), (820, 22714), (1108, 16810), (1385, 13448), (1640, 11357), (1681, 11080), (2216, 8405), (2770, 6724), (3362, 5540)]