21637276

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{284701}}^1$

素因数の和:284724

約数の個数: 12

約数和(自身を含む): 39858280

約数和(自身を除く): 18221004

約数列:

[1, 2, 4, 19, 38, 76, 284701, 569402, 1138804, 5409319, 10818638, 21637276]

約数ペア:

[(1, 21637276), (2, 10818638), (4, 5409319), (19, 1138804), (38, 569402), (76, 284701)]