21399856

素因数分解:

$2^4\times {\mathrm{379}}^1\times {\mathrm{3529}}^1$

素因数の和:3916

約数の個数: 20

約数和(自身を含む): 41583400

約数和(自身を除く): 20183544

約数列:

[1, 2, 4, 8, 16, 379, 758, 1516, 3032, 3529, 6064, 7058, 14116, 28232, 56464, 1337491, 2674982, 5349964, 10699928, 21399856]

約数ペア:

[(1, 21399856), (2, 10699928), (4, 5349964), (8, 2674982), (16, 1337491), (379, 56464), (758, 28232), (1516, 14116), (3032, 7058), (3529, 6064)]