21142877

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2239}}^1$

素因数の和:2336

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4661923

約数列:

[1, 7, 19, 71, 133, 497, 1349, 2239, 9443, 15673, 42541, 158969, 297787, 1112783, 3020411, 21142877]

約数ペア:

[(1, 21142877), (7, 3020411), (19, 1112783), (71, 297787), (133, 158969), (497, 42541), (1349, 15673), (2239, 9443)]