21081916

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{277}}^1\times {\mathrm{359}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 37830240

約数和(自身を除く): 16748324

約数列:

[1, 2, 4, 53, 106, 212, 277, 359, 554, 718, 1108, 1436, 14681, 19027, 29362, 38054, 58724, 76108, 99443, 198886, 397772, 5270479, 10540958, 21081916]

約数ペア:

[(1, 21081916), (2, 10540958), (4, 5270479), (53, 397772), (106, 198886), (212, 99443), (277, 76108), (359, 58724), (554, 38054), (718, 29362), (1108, 19027), (1436, 14681)]