39905990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{1181}}^1$

素因数の和:1328

約数の個数: 32

約数和(自身を含む): 74891520

約数和(自身を除く): 34985530

約数列:

[1, 2, 5, 10, 31, 62, 109, 155, 218, 310, 545, 1090, 1181, 2362, 3379, 5905, 6758, 11810, 16895, 33790, 36611, 73222, 128729, 183055, 257458, 366110, 643645, 1287290, 3990599, 7981198, 19952995, 39905990]

約数ペア:

[(1, 39905990), (2, 19952995), (5, 7981198), (10, 3990599), (31, 1287290), (62, 643645), (109, 366110), (155, 257458), (218, 183055), (310, 128729), (545, 73222), (1090, 36611), (1181, 33790), (2362, 16895), (3379, 11810), (5905, 6758)]