20207747

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1427}}^1$

素因数の和:1475

約数の個数: 18

約数和(自身を含む): 24988572

約数和(自身を除く): 4780825

約数列:

[1, 7, 17, 49, 119, 289, 833, 1427, 2023, 9989, 14161, 24259, 69923, 169813, 412403, 1188691, 2886821, 20207747]

約数ペア:

[(1, 20207747), (7, 2886821), (17, 1188691), (49, 412403), (119, 169813), (289, 69923), (833, 24259), (1427, 14161), (2023, 9989)]