21333657

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{557}}^1\times {\mathrm{751}}^1$

素因数の和:1328

約数の個数: 16

約数和(自身を含む): 30212352

約数和(自身を除く): 8878695

約数列:

[1, 3, 17, 51, 557, 751, 1671, 2253, 9469, 12767, 28407, 38301, 418307, 1254921, 7111219, 21333657]

約数ペア:

[(1, 21333657), (3, 7111219), (17, 1254921), (51, 418307), (557, 38301), (751, 28407), (1671, 12767), (2253, 9469)]