20391028

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38329}}^1$

素因数の和:38359

約数の個数: 24

約数和(自身を含む): 42929600

約数和(自身を除く): 22538572

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 38329, 76658, 153316, 268303, 536606, 728251, 1073212, 1456502, 2913004, 5097757, 10195514, 20391028]

約数ペア:

[(1, 20391028), (2, 10195514), (4, 5097757), (7, 2913004), (14, 1456502), (19, 1073212), (28, 728251), (38, 536606), (76, 268303), (133, 153316), (266, 76658), (532, 38329)]