87998975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{809}}^1$

素因数の和:1067

約数の個数: 24

約数和(自身を含む): 115506000

約数和(自身を除く): 27507025

約数列:

[1, 5, 19, 25, 95, 229, 475, 809, 1145, 4045, 4351, 5725, 15371, 20225, 21755, 76855, 108775, 185261, 384275, 926305, 3519959, 4631525, 17599795, 87998975]

約数ペア:

[(1, 87998975), (5, 17599795), (19, 4631525), (25, 3519959), (95, 926305), (229, 384275), (475, 185261), (809, 108775), (1145, 76855), (4045, 21755), (4351, 20225), (5725, 15371)]