21871497

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{857}}^1$

素因数の和:1088

約数の個数: 16

約数和(自身を含む): 29981952

約数和(自身を除く): 8110455

約数列:

[1, 3, 47, 141, 181, 543, 857, 2571, 8507, 25521, 40279, 120837, 155117, 465351, 7290499, 21871497]

約数ペア:

[(1, 21871497), (3, 7290499), (47, 465351), (141, 155117), (181, 120837), (543, 40279), (857, 25521), (2571, 8507)]