20216565

素因数分解:

$3^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{859}}^1$

素因数の和:1393

約数の個数: 24

約数和(自身を含む): 35149920

約数和(自身を除く): 14933355

約数列:

[1, 3, 5, 9, 15, 45, 523, 859, 1569, 2577, 2615, 4295, 4707, 7731, 7845, 12885, 23535, 38655, 449257, 1347771, 2246285, 4043313, 6738855, 20216565]

約数ペア:

[(1, 20216565), (3, 6738855), (5, 4043313), (9, 2246285), (15, 1347771), (45, 449257), (523, 38655), (859, 23535), (1569, 12885), (2577, 7845), (2615, 7731), (4295, 4707)]