21620271

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8821}}^1$

素因数の和:8886

約数の個数: 16

約数和(自身を含む): 31053440

約数和(自身を除く): 9433169

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8821, 26463, 167599, 379303, 502797, 1137909, 7206757, 21620271]

約数ペア:

[(1, 21620271), (3, 7206757), (19, 1137909), (43, 502797), (57, 379303), (129, 167599), (817, 26463), (2451, 8821)]