640559810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{142031}}^1$

素因数の和:142090

約数の個数: 32

約数和(自身を含む): 1288514304

約数和(自身を除く): 647954494

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 205, 410, 451, 902, 2255, 4510, 142031, 284062, 710155, 1420310, 1562341, 3124682, 5823271, 7811705, 11646542, 15623410, 29116355, 58232710, 64055981, 128111962, 320279905, 640559810]

約数ペア:

[(1, 640559810), (2, 320279905), (5, 128111962), (10, 64055981), (11, 58232710), (22, 29116355), (41, 15623410), (55, 11646542), (82, 7811705), (110, 5823271), (205, 3124682), (410, 1562341), (451, 1420310), (902, 710155), (2255, 284062), (4510, 142031)]