21992405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{1279}}^1$

素因数の和:1484

約数の個数: 16

約数和(自身を含む): 27955200

約数和(自身を除く): 5962795

約数列:

[1, 5, 19, 95, 181, 905, 1279, 3439, 6395, 17195, 24301, 121505, 231499, 1157495, 4398481, 21992405]

約数ペア:

[(1, 21992405), (5, 4398481), (19, 1157495), (95, 231499), (181, 121505), (905, 24301), (1279, 17195), (3439, 6395)]