21580862

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{521}}^1$

素因数の和:811

約数の個数: 16

約数和(自身を含む): 32886000

約数和(自身を除く): 11305138

約数列:

[1, 2, 139, 149, 278, 298, 521, 1042, 20711, 41422, 72419, 77629, 144838, 155258, 10790431, 21580862]

約数ペア:

[(1, 21580862), (2, 10790431), (139, 155258), (149, 144838), (278, 77629), (298, 72419), (521, 41422), (1042, 20711)]