68380420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{110291}}^1$

素因数の和:110331

約数の個数: 24

約数和(自身を含む): 148232448

約数和(自身を除く): 79852028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 110291, 220582, 441164, 551455, 1102910, 2205820, 3419021, 6838042, 13676084, 17095105, 34190210, 68380420]

約数ペア:

[(1, 68380420), (2, 34190210), (4, 17095105), (5, 13676084), (10, 6838042), (20, 3419021), (31, 2205820), (62, 1102910), (124, 551455), (155, 441164), (310, 220582), (620, 110291)]