391220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 849408

約数和(自身を除く): 458188

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 631, 1262, 2524, 3155, 6310, 12620, 19561, 39122, 78244, 97805, 195610, 391220]

約数ペア:

[(1, 391220), (2, 195610), (4, 97805), (5, 78244), (10, 39122), (20, 19561), (31, 12620), (62, 6310), (124, 3155), (155, 2524), (310, 1262), (620, 631)]