129728980

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{3769}}^1$

素因数の和:5499

約数の個数: 24

約数和(自身を含む): 272661480

約数和(自身を除く): 142932500

約数列:

[1, 2, 4, 5, 10, 20, 1721, 3442, 3769, 6884, 7538, 8605, 15076, 17210, 18845, 34420, 37690, 75380, 6486449, 12972898, 25945796, 32432245, 64864490, 129728980]

約数ペア:

[(1, 129728980), (2, 64864490), (4, 32432245), (5, 25945796), (10, 12972898), (20, 6486449), (1721, 75380), (3442, 37690), (3769, 34420), (6884, 18845), (7538, 17210), (8605, 15076)]