20427659

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 25485840

約数和(自身を除く): 5058181

約数列:

[1, 7, 17, 49, 119, 137, 179, 833, 959, 1253, 2329, 3043, 6713, 8771, 16303, 21301, 24523, 114121, 149107, 171661, 416891, 1201627, 2918237, 20427659]

約数ペア:

[(1, 20427659), (7, 2918237), (17, 1201627), (49, 416891), (119, 171661), (137, 149107), (179, 114121), (833, 24523), (959, 21301), (1253, 16303), (2329, 8771), (3043, 6713)]