265680620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{217771}}^1$

素因数の和:217841

約数の個数: 24

約数和(自身を含む): 567078288

約数和(自身を除く): 301397668

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 217771, 435542, 871084, 1088855, 2177710, 4355420, 13284031, 26568062, 53136124, 66420155, 132840310, 265680620]

約数ペア:

[(1, 265680620), (2, 132840310), (4, 66420155), (5, 53136124), (10, 26568062), (20, 13284031), (61, 4355420), (122, 2177710), (244, 1088855), (305, 871084), (610, 435542), (1220, 217771)]