20039991

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{887}}^1$

素因数の和:1350

約数の個数: 16

約数和(自身を含む): 28387584

約数和(自身を除く): 8347593

約数列:

[1, 3, 17, 51, 443, 887, 1329, 2661, 7531, 15079, 22593, 45237, 392941, 1178823, 6679997, 20039991]

約数ペア:

[(1, 20039991), (3, 6679997), (17, 1178823), (51, 392941), (443, 45237), (887, 22593), (1329, 15079), (2661, 7531)]