21807107

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 27480384

約数和(自身を除く): 5673277

約数列:

[1, 7, 17, 47, 49, 119, 329, 557, 799, 833, 2303, 3899, 5593, 9469, 26179, 27293, 39151, 66283, 183253, 445043, 463981, 1282771, 3115301, 21807107]

約数ペア:

[(1, 21807107), (7, 3115301), (17, 1282771), (47, 463981), (49, 445043), (119, 183253), (329, 66283), (557, 39151), (799, 27293), (833, 26179), (2303, 9469), (3899, 5593)]