20206875

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{829}}^1$

素因数の和:865

約数の個数: 40

約数和(自身を含む): 36300880

約数和(自身を除く): 16094005

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 829, 975, 1625, 1875, 2487, 4145, 4875, 8125, 10777, 12435, 20725, 24375, 32331, 53885, 62175, 103625, 161655, 269425, 310875, 518125, 808275, 1347125, 1554375, 4041375, 6735625, 20206875]

約数ペア:

[(1, 20206875), (3, 6735625), (5, 4041375), (13, 1554375), (15, 1347125), (25, 808275), (39, 518125), (65, 310875), (75, 269425), (125, 161655), (195, 103625), (325, 62175), (375, 53885), (625, 32331), (829, 24375), (975, 20725), (1625, 12435), (1875, 10777), (2487, 8125), (4145, 4875)]