20980456

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{12919}}^1$

素因数の和:12961

約数の個数: 32

約数和(自身を含む): 46512000

約数和(自身を除く): 25531544

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 812, 1624, 12919, 25838, 51676, 90433, 103352, 180866, 361732, 374651, 723464, 749302, 1498604, 2622557, 2997208, 5245114, 10490228, 20980456]

約数ペア:

[(1, 20980456), (2, 10490228), (4, 5245114), (7, 2997208), (8, 2622557), (14, 1498604), (28, 749302), (29, 723464), (56, 374651), (58, 361732), (116, 180866), (203, 103352), (232, 90433), (406, 51676), (812, 25838), (1624, 12919)]