20357455

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{509}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 25826400

約数和(自身を除く): 5468945

約数列:

[1, 5, 19, 95, 421, 509, 2105, 2545, 7999, 9671, 39995, 48355, 214289, 1071445, 4071491, 20357455]

約数ペア:

[(1, 20357455), (5, 4071491), (19, 1071445), (95, 214289), (421, 48355), (509, 39995), (2105, 9671), (2545, 7999)]