257957980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1842557}}^1$

素因数の和:1842573

約数の個数: 24

約数和(自身を含む): 619099488

約数和(自身を除く): 361141508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1842557, 3685114, 7370228, 9212785, 12897899, 18425570, 25795798, 36851140, 51591596, 64489495, 128978990, 257957980]

約数ペア:

[(1, 257957980), (2, 128978990), (4, 64489495), (5, 51591596), (7, 36851140), (10, 25795798), (14, 18425570), (20, 12897899), (28, 9212785), (35, 7370228), (70, 3685114), (140, 1842557)]