31265980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 68382720

約数和(自身を除く): 37116740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 211, 239, 310, 422, 478, 620, 844, 956, 1055, 1195, 2110, 2390, 4220, 4780, 6541, 7409, 13082, 14818, 26164, 29636, 32705, 37045, 50429, 65410, 74090, 100858, 130820, 148180, 201716, 252145, 504290, 1008580, 1563299, 3126598, 6253196, 7816495, 15632990, 31265980]

約数ペア:

[(1, 31265980), (2, 15632990), (4, 7816495), (5, 6253196), (10, 3126598), (20, 1563299), (31, 1008580), (62, 504290), (124, 252145), (155, 201716), (211, 148180), (239, 130820), (310, 100858), (422, 74090), (478, 65410), (620, 50429), (844, 37045), (956, 32705), (1055, 29636), (1195, 26164), (2110, 14818), (2390, 13082), (4220, 7409), (4780, 6541)]