201990620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{776887}}^1$

素因数の和:776909

約数の個数: 24

約数和(自身を含む): 456810144

約数和(自身を除く): 254819524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 776887, 1553774, 3107548, 3884435, 7768870, 10099531, 15537740, 20199062, 40398124, 50497655, 100995310, 201990620]

約数ペア:

[(1, 201990620), (2, 100995310), (4, 50497655), (5, 40398124), (10, 20199062), (13, 15537740), (20, 10099531), (26, 7768870), (52, 3884435), (65, 3107548), (130, 1553774), (260, 776887)]