18231985

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 23451624

約数和(自身を除く): 5219639

約数列:

[1, 5, 23, 61, 113, 115, 305, 529, 565, 1403, 2599, 2645, 6893, 7015, 12995, 32269, 34465, 59777, 158539, 161345, 298885, 792695, 3646397, 18231985]

約数ペア:

[(1, 18231985), (5, 3646397), (23, 792695), (61, 298885), (113, 161345), (115, 158539), (305, 59777), (529, 34465), (565, 32269), (1403, 12995), (2599, 7015), (2645, 6893)]