856220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1381}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 1857408

約数和(自身を除く): 1001188

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1381, 2762, 5524, 6905, 13810, 27620, 42811, 85622, 171244, 214055, 428110, 856220]

約数ペア:

[(1, 856220), (2, 428110), (4, 214055), (5, 171244), (10, 85622), (20, 42811), (31, 27620), (62, 13810), (124, 6905), (155, 5524), (310, 2762), (620, 1381)]