18890625

素因数分解:

$3^1\times 5^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:77

約数の個数: 56

約数和(自身を含む): 34999552

約数和(自身を除く): 16108927

約数列:

[1, 3, 5, 13, 15, 25, 31, 39, 65, 75, 93, 125, 155, 195, 325, 375, 403, 465, 625, 775, 975, 1209, 1625, 1875, 2015, 2325, 3125, 3875, 4875, 6045, 8125, 9375, 10075, 11625, 15625, 19375, 24375, 30225, 40625, 46875, 50375, 58125, 96875, 121875, 151125, 203125, 251875, 290625, 484375, 609375, 755625, 1259375, 1453125, 3778125, 6296875, 18890625]

約数ペア:

[(1, 18890625), (3, 6296875), (5, 3778125), (13, 1453125), (15, 1259375), (25, 755625), (31, 609375), (39, 484375), (65, 290625), (75, 251875), (93, 203125), (125, 151125), (155, 121875), (195, 96875), (325, 58125), (375, 50375), (403, 46875), (465, 40625), (625, 30225), (775, 24375), (975, 19375), (1209, 15625), (1625, 11625), (1875, 10075), (2015, 9375), (2325, 8125), (3125, 6045), (3875, 4875)]