20391332

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20639}}^1$

素因数の和:20675

約数の個数: 24

約数和(自身を含む): 40454400

約数和(自身を除く): 20063068

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20639, 41278, 82556, 268307, 392141, 536614, 784282, 1073228, 1568564, 5097833, 10195666, 20391332]

約数ペア:

[(1, 20391332), (2, 10195666), (4, 5097833), (13, 1568564), (19, 1073228), (26, 784282), (38, 536614), (52, 392141), (76, 268307), (247, 82556), (494, 41278), (988, 20639)]