18912890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{283}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 35211456

約数和(自身を除く): 16298566

約数列:

[1, 2, 5, 10, 41, 82, 163, 205, 283, 326, 410, 566, 815, 1415, 1630, 2830, 6683, 11603, 13366, 23206, 33415, 46129, 58015, 66830, 92258, 116030, 230645, 461290, 1891289, 3782578, 9456445, 18912890]

約数ペア:

[(1, 18912890), (2, 9456445), (5, 3782578), (10, 1891289), (41, 461290), (82, 230645), (163, 116030), (205, 92258), (283, 66830), (326, 58015), (410, 46129), (566, 33415), (815, 23206), (1415, 13366), (1630, 11603), (2830, 6683)]