130820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 284928

約数和(自身を除く): 154108

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 211, 310, 422, 620, 844, 1055, 2110, 4220, 6541, 13082, 26164, 32705, 65410, 130820]

約数ペア:

[(1, 130820), (2, 65410), (4, 32705), (5, 26164), (10, 13082), (20, 6541), (31, 4220), (62, 2110), (124, 1055), (155, 844), (211, 620), (310, 422)]