20631793

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{661}}^1$

素因数の和:702

約数の個数: 20

約数和(自身を含む): 25959668

約数和(自身を除く): 5327875

約数列:

[1, 7, 13, 49, 91, 343, 637, 661, 2401, 4459, 4627, 8593, 31213, 32389, 60151, 226723, 421057, 1587061, 2947399, 20631793]

約数ペア:

[(1, 20631793), (7, 2947399), (13, 1587061), (49, 421057), (91, 226723), (343, 60151), (637, 32389), (661, 31213), (2401, 8593), (4459, 4627)]