20217849

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1\times {\mathrm{643}}^1$

素因数の和:916

約数の個数: 16

約数和(自身を含む): 27697152

約数和(自身を除く): 7479303

約数列:

[1, 3, 47, 141, 223, 643, 669, 1929, 10481, 30221, 31443, 90663, 143389, 430167, 6739283, 20217849]

約数ペア:

[(1, 20217849), (3, 6739283), (47, 430167), (141, 143389), (223, 90663), (643, 31443), (669, 30221), (1929, 10481)]