12942640

素因数分解:

$2^4\times 5^1\times {\mathrm{161783}}^1$

素因数の和:161796

約数の個数: 20

約数和(自身を含む): 30091824

約数和(自身を除く): 17149184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161783, 323566, 647132, 808915, 1294264, 1617830, 2588528, 3235660, 6471320, 12942640]

約数ペア:

[(1, 12942640), (2, 6471320), (4, 3235660), (5, 2588528), (8, 1617830), (10, 1294264), (16, 808915), (20, 647132), (40, 323566), (80, 161783)]