15920125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:226

約数の個数: 32

約数和(自身を含む): 21831264

約数和(自身を除く): 5911139

約数列:

[1, 5, 13, 25, 65, 97, 101, 125, 325, 485, 505, 1261, 1313, 1625, 2425, 2525, 6305, 6565, 9797, 12125, 12625, 31525, 32825, 48985, 127361, 157625, 164125, 244925, 636805, 1224625, 3184025, 15920125]

約数ペア:

[(1, 15920125), (5, 3184025), (13, 1224625), (25, 636805), (65, 244925), (97, 164125), (101, 157625), (125, 127361), (325, 48985), (485, 32825), (505, 31525), (1261, 12625), (1313, 12125), (1625, 9797), (2425, 6565), (2525, 6305)]