31191890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{421}}^1$

素因数の和:698

約数の個数: 32

約数和(自身を含む): 58337280

約数和(自身を除く): 27145390

約数列:

[1, 2, 5, 10, 31, 62, 155, 239, 310, 421, 478, 842, 1195, 2105, 2390, 4210, 7409, 13051, 14818, 26102, 37045, 65255, 74090, 100619, 130510, 201238, 503095, 1006190, 3119189, 6238378, 15595945, 31191890]

約数ペア:

[(1, 31191890), (2, 15595945), (5, 6238378), (10, 3119189), (31, 1006190), (62, 503095), (155, 201238), (239, 130510), (310, 100619), (421, 74090), (478, 65255), (842, 37045), (1195, 26102), (2105, 14818), (2390, 13051), (4210, 7409)]