20215580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13127}}^1$

素因数の和:13154

約数の個数: 48

約数和(自身を含む): 52932096

約数和(自身を除く): 32716516

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13127, 26254, 52508, 65635, 91889, 131270, 144397, 183778, 262540, 288794, 367556, 459445, 577588, 721985, 918890, 1010779, 1443970, 1837780, 2021558, 2887940, 4043116, 5053895, 10107790, 20215580]

約数ペア:

[(1, 20215580), (2, 10107790), (4, 5053895), (5, 4043116), (7, 2887940), (10, 2021558), (11, 1837780), (14, 1443970), (20, 1010779), (22, 918890), (28, 721985), (35, 577588), (44, 459445), (55, 367556), (70, 288794), (77, 262540), (110, 183778), (140, 144397), (154, 131270), (220, 91889), (308, 65635), (385, 52508), (770, 26254), (1540, 13127)]