720331917

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1\times {\mathrm{571}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 1027952640

約数和(自身を除く): 307620723

約数列:

[1, 3, 23, 47, 69, 141, 389, 571, 1081, 1167, 1713, 3243, 8947, 13133, 18283, 26837, 26841, 39399, 54849, 80511, 222119, 420509, 617251, 666357, 1261527, 1851753, 5108737, 10439593, 15326211, 31318779, 240110639, 720331917]

約数ペア:

[(1, 720331917), (3, 240110639), (23, 31318779), (47, 15326211), (69, 10439593), (141, 5108737), (389, 1851753), (571, 1261527), (1081, 666357), (1167, 617251), (1713, 420509), (3243, 222119), (8947, 80511), (13133, 54849), (18283, 39399), (26837, 26841)]