257640680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{585547}}^1$

素因数の和:585569

約数の個数: 32

約数和(自身を含む): 632391840

約数和(自身を除く): 374751160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 585547, 1171094, 2342188, 2927735, 4684376, 5855470, 6441017, 11710940, 12882034, 23421880, 25764068, 32205085, 51528136, 64410170, 128820340, 257640680]

約数ペア:

[(1, 257640680), (2, 128820340), (4, 64410170), (5, 51528136), (8, 32205085), (10, 25764068), (11, 23421880), (20, 12882034), (22, 11710940), (40, 6441017), (44, 5855470), (55, 4684376), (88, 2927735), (110, 2342188), (220, 1171094), (440, 585547)]