25640875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 35642880

約数和(自身を除く): 10002005

約数列:

[1, 5, 13, 25, 31, 65, 125, 155, 325, 403, 509, 775, 1625, 2015, 2545, 3875, 6617, 10075, 12725, 15779, 33085, 50375, 63625, 78895, 165425, 205127, 394475, 827125, 1025635, 1972375, 5128175, 25640875]

約数ペア:

[(1, 25640875), (5, 5128175), (13, 1972375), (25, 1025635), (31, 827125), (65, 394475), (125, 205127), (155, 165425), (325, 78895), (403, 63625), (509, 50375), (775, 33085), (1625, 15779), (2015, 12725), (2545, 10075), (3875, 6617)]