19906564

素因数分解:

$2^2\times {\mathrm{421}}^1\times {\mathrm{11821}}^1$

素因数の和:12246

約数の個数: 12

約数和(自身を含む): 34922188

約数和(自身を除く): 15015624

約数列:

[1, 2, 4, 421, 842, 1684, 11821, 23642, 47284, 4976641, 9953282, 19906564]

約数ペア:

[(1, 19906564), (2, 9953282), (4, 4976641), (421, 47284), (842, 23642), (1684, 11821)]