856038340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1380707}}^1$

素因数の和:1380747

約数の個数: 24

約数和(自身を含む): 1855671552

約数和(自身を除く): 999633212

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1380707, 2761414, 5522828, 6903535, 13807070, 27614140, 42801917, 85603834, 171207668, 214009585, 428019170, 856038340]

約数ペア:

[(1, 856038340), (2, 428019170), (4, 214009585), (5, 171207668), (10, 85603834), (20, 42801917), (31, 27614140), (62, 13807070), (124, 6903535), (155, 5522828), (310, 2761414), (620, 1380707)]