19689625

素因数分解:

$5^3\times {\mathrm{67}}^1\times {\mathrm{2351}}^1$

素因数の和:2433

約数の個数: 16

約数和(自身を含む): 24950016

約数和(自身を除く): 5260391

約数列:

[1, 5, 25, 67, 125, 335, 1675, 2351, 8375, 11755, 58775, 157517, 293875, 787585, 3937925, 19689625]

約数ペア:

[(1, 19689625), (5, 3937925), (25, 787585), (67, 293875), (125, 157517), (335, 58775), (1675, 11755), (2351, 8375)]