21689607

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{773}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 29721600

約数和(自身を除く): 8031993

約数列:

[1, 3, 47, 141, 199, 597, 773, 2319, 9353, 28059, 36331, 108993, 153827, 461481, 7229869, 21689607]

約数ペア:

[(1, 21689607), (3, 7229869), (47, 461481), (141, 153827), (199, 108993), (597, 36331), (773, 28059), (2319, 9353)]