21790028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{2341}}^1$

素因数の和:2537

約数の個数: 24

約数和(自身を含む): 41312880

約数和(自身を除く): 19522852

約数列:

[1, 2, 4, 13, 26, 52, 179, 358, 716, 2327, 2341, 4654, 4682, 9308, 9364, 30433, 60866, 121732, 419039, 838078, 1676156, 5447507, 10895014, 21790028]

約数ペア:

[(1, 21790028), (2, 10895014), (4, 5447507), (13, 1676156), (26, 838078), (52, 419039), (179, 121732), (358, 60866), (716, 30433), (2327, 9364), (2341, 9308), (4654, 4682)]