257996860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1172713}}^1$

素因数の和:1172733

約数の個数: 24

約数和(自身を含む): 591047856

約数和(自身を除く): 333050996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1172713, 2345426, 4690852, 5863565, 11727130, 12899843, 23454260, 25799686, 51599372, 64499215, 128998430, 257996860]

約数ペア:

[(1, 257996860), (2, 128998430), (4, 64499215), (5, 51599372), (10, 25799686), (11, 23454260), (20, 12899843), (22, 11727130), (44, 5863565), (55, 4690852), (110, 2345426), (220, 1172713)]