18191240

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1607}}^1$

素因数の和:1901

約数の個数: 32

約数和(自身を含む): 41100480

約数和(自身を除く): 22909240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1607, 2264, 2830, 3214, 5660, 6428, 8035, 11320, 12856, 16070, 32140, 64280, 454781, 909562, 1819124, 2273905, 3638248, 4547810, 9095620, 18191240]

約数ペア:

[(1, 18191240), (2, 9095620), (4, 4547810), (5, 3638248), (8, 2273905), (10, 1819124), (20, 909562), (40, 454781), (283, 64280), (566, 32140), (1132, 16070), (1415, 12856), (1607, 11320), (2264, 8035), (2830, 6428), (3214, 5660)]