18698420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71917}}^1$

素因数の和:71939

約数の個数: 24

約数和(自身を含む): 42287784

約数和(自身を除く): 23589364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71917, 143834, 287668, 359585, 719170, 934921, 1438340, 1869842, 3739684, 4674605, 9349210, 18698420]

約数ペア:

[(1, 18698420), (2, 9349210), (4, 4674605), (5, 3739684), (10, 1869842), (13, 1438340), (20, 934921), (26, 719170), (52, 359585), (65, 287668), (130, 143834), (260, 71917)]