18909579

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:212

約数の個数: 32

約数和(自身を含む): 28940800

約数和(自身を除く): 10031221

約数列:

[1, 3, 13, 19, 39, 57, 151, 169, 247, 453, 507, 741, 1963, 2197, 2869, 3211, 5889, 6591, 8607, 9633, 25519, 37297, 41743, 76557, 111891, 125229, 331747, 484861, 995241, 1454583, 6303193, 18909579]

約数ペア:

[(1, 18909579), (3, 6303193), (13, 1454583), (19, 995241), (39, 484861), (57, 331747), (151, 125229), (169, 111891), (247, 76557), (453, 41743), (507, 37297), (741, 25519), (1963, 9633), (2197, 8607), (2869, 6591), (3211, 5889)]