18988257

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{389}}^1$

素因数の和:752

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 6957663

約数列:

[1, 3, 53, 159, 307, 389, 921, 1167, 16271, 20617, 48813, 61851, 119423, 358269, 6329419, 18988257]

約数ペア:

[(1, 18988257), (3, 6329419), (53, 358269), (159, 119423), (307, 61851), (389, 48813), (921, 20617), (1167, 16271)]