261640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 610560

約数和(自身を除く): 348920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 211, 248, 310, 422, 620, 844, 1055, 1240, 1688, 2110, 4220, 6541, 8440, 13082, 26164, 32705, 52328, 65410, 130820, 261640]

約数ペア:

[(1, 261640), (2, 130820), (4, 65410), (5, 52328), (8, 32705), (10, 26164), (20, 13082), (31, 8440), (40, 6541), (62, 4220), (124, 2110), (155, 1688), (211, 1240), (248, 1055), (310, 844), (422, 620)]