19882525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{467}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 26810784

約数和(自身を除く): 6928259

約数列:

[1, 5, 13, 25, 65, 131, 325, 467, 655, 1703, 2335, 3275, 6071, 8515, 11675, 30355, 42575, 61177, 151775, 305885, 795301, 1529425, 3976505, 19882525]

約数ペア:

[(1, 19882525), (5, 3976505), (13, 1529425), (25, 795301), (65, 305885), (131, 151775), (325, 61177), (467, 42575), (655, 30355), (1703, 11675), (2335, 8515), (3275, 6071)]