20502629

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 25576128

約数和(自身を除く): 5073499

約数列:

[1, 7, 17, 49, 119, 151, 163, 833, 1057, 1141, 2567, 2771, 7399, 7987, 17969, 19397, 24613, 125783, 135779, 172291, 418421, 1206037, 2928947, 20502629]

約数ペア:

[(1, 20502629), (7, 2928947), (17, 1206037), (49, 418421), (119, 172291), (151, 135779), (163, 125783), (833, 24613), (1057, 19397), (1141, 17969), (2567, 7987), (2771, 7399)]