25439375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:165

約数の個数: 40

約数和(自身を含む): 35688576

約数和(自身を除く): 10249201

約数列:

[1, 5, 13, 25, 31, 65, 101, 125, 155, 325, 403, 505, 625, 775, 1313, 1625, 2015, 2525, 3131, 3875, 6565, 8125, 10075, 12625, 15655, 19375, 32825, 40703, 50375, 63125, 78275, 164125, 203515, 251875, 391375, 820625, 1017575, 1956875, 5087875, 25439375]

約数ペア:

[(1, 25439375), (5, 5087875), (13, 1956875), (25, 1017575), (31, 820625), (65, 391375), (101, 251875), (125, 203515), (155, 164125), (325, 78275), (403, 63125), (505, 50375), (625, 40703), (775, 32825), (1313, 19375), (1625, 15655), (2015, 12625), (2525, 10075), (3131, 8125), (3875, 6565)]