18789875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 26138112

約数和(自身を除く): 7348237

約数列:

[1, 5, 13, 25, 31, 65, 125, 155, 325, 373, 403, 775, 1625, 1865, 2015, 3875, 4849, 9325, 10075, 11563, 24245, 46625, 50375, 57815, 121225, 150319, 289075, 606125, 751595, 1445375, 3757975, 18789875]

約数ペア:

[(1, 18789875), (5, 3757975), (13, 1445375), (25, 751595), (31, 606125), (65, 289075), (125, 150319), (155, 121225), (325, 57815), (373, 50375), (403, 46625), (775, 24245), (1625, 11563), (1865, 10075), (2015, 9325), (3875, 4849)]