128581375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1181}}^1$

素因数の和:1276

約数の個数: 32

約数和(自身を含む): 175541184

約数和(自身を除く): 46959809

約数列:

[1, 5, 13, 25, 65, 67, 125, 325, 335, 871, 1181, 1625, 1675, 4355, 5905, 8375, 15353, 21775, 29525, 76765, 79127, 108875, 147625, 383825, 395635, 1028651, 1919125, 1978175, 5143255, 9890875, 25716275, 128581375]

約数ペア:

[(1, 128581375), (5, 25716275), (13, 9890875), (25, 5143255), (65, 1978175), (67, 1919125), (125, 1028651), (325, 395635), (335, 383825), (871, 147625), (1181, 108875), (1625, 79127), (1675, 76765), (4355, 29525), (5905, 21775), (8375, 15353)]