12778820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20611}}^1$

素因数の和:20651

約数の個数: 24

約数和(自身を含む): 27702528

約数和(自身を除く): 14923708

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 20611, 41222, 82444, 103055, 206110, 412220, 638941, 1277882, 2555764, 3194705, 6389410, 12778820]

約数ペア:

[(1, 12778820), (2, 6389410), (4, 3194705), (5, 2555764), (10, 1277882), (20, 638941), (31, 412220), (62, 206110), (124, 103055), (155, 82444), (310, 41222), (620, 20611)]