16875625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:131

約数の個数: 40

約数和(自身を含む): 23792384

約数和(自身を除く): 6916759

約数列:

[1, 5, 13, 25, 31, 65, 67, 125, 155, 325, 335, 403, 625, 775, 871, 1625, 1675, 2015, 2077, 3875, 4355, 8125, 8375, 10075, 10385, 19375, 21775, 27001, 41875, 50375, 51925, 108875, 135005, 251875, 259625, 544375, 675025, 1298125, 3375125, 16875625]

約数ペア:

[(1, 16875625), (5, 3375125), (13, 1298125), (25, 675025), (31, 544375), (65, 259625), (67, 251875), (125, 135005), (155, 108875), (325, 51925), (335, 50375), (403, 41875), (625, 27001), (775, 21775), (871, 19375), (1625, 10385), (1675, 10075), (2015, 8375), (2077, 8125), (3875, 4355)]