17883125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 40

約数和(自身を含む): 25191936

約数和(自身を除く): 7308811

約数列:

[1, 5, 13, 25, 31, 65, 71, 125, 155, 325, 355, 403, 625, 775, 923, 1625, 1775, 2015, 2201, 3875, 4615, 8125, 8875, 10075, 11005, 19375, 23075, 28613, 44375, 50375, 55025, 115375, 143065, 251875, 275125, 576875, 715325, 1375625, 3576625, 17883125]

約数ペア:

[(1, 17883125), (5, 3576625), (13, 1375625), (25, 715325), (31, 576875), (65, 275125), (71, 251875), (125, 143065), (155, 115375), (325, 55025), (355, 50375), (403, 44375), (625, 28613), (775, 23075), (923, 19375), (1625, 11005), (1775, 10075), (2015, 8875), (2201, 8125), (3875, 4615)]