21875581

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{571}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 27035008

約数和(自身を除く): 5159427

約数列:

[1, 7, 13, 91, 421, 571, 2947, 3997, 5473, 7423, 38311, 51961, 240391, 1682737, 3125083, 21875581]

約数ペア:

[(1, 21875581), (7, 3125083), (13, 1682737), (91, 240391), (421, 51961), (571, 38311), (2947, 7423), (3997, 5473)]