18205678

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{4421}}^1$

素因数の和:4523

約数の個数: 16

約数和(自身を含む): 28654560

約数和(自身を除く): 10448882

約数列:

[1, 2, 29, 58, 71, 142, 2059, 4118, 4421, 8842, 128209, 256418, 313891, 627782, 9102839, 18205678]

約数ペア:

[(1, 18205678), (2, 9102839), (29, 627782), (58, 313891), (71, 256418), (142, 128209), (2059, 8842), (4118, 4421)]