21903620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7879}}^1$

素因数の和:8027

約数の個数: 24

約数和(自身を含む): 46334400

約数和(自身を除く): 24430780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 7879, 15758, 31516, 39395, 78790, 157580, 1095181, 2190362, 4380724, 5475905, 10951810, 21903620]

約数ペア:

[(1, 21903620), (2, 10951810), (4, 5475905), (5, 4380724), (10, 2190362), (20, 1095181), (139, 157580), (278, 78790), (556, 39395), (695, 31516), (1390, 15758), (2780, 7879)]