21606225

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{9293}}^1$

素因数の和:9337

約数の個数: 24

約数和(自身を含む): 36878592

約数和(自身を除く): 15272367

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 465, 775, 2325, 9293, 27879, 46465, 139395, 232325, 288083, 696975, 864249, 1440415, 4321245, 7202075, 21606225]

約数ペア:

[(1, 21606225), (3, 7202075), (5, 4321245), (15, 1440415), (25, 864249), (31, 696975), (75, 288083), (93, 232325), (155, 139395), (465, 46465), (775, 27879), (2325, 9293)]