20742620

素因数分解:

$2^2\times 5^1\times {\mathrm{751}}^1\times {\mathrm{1381}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 43649088

約数和(自身を除く): 22906468

約数列:

[1, 2, 4, 5, 10, 20, 751, 1381, 1502, 2762, 3004, 3755, 5524, 6905, 7510, 13810, 15020, 27620, 1037131, 2074262, 4148524, 5185655, 10371310, 20742620]

約数ペア:

[(1, 20742620), (2, 10371310), (4, 5185655), (5, 4148524), (10, 2074262), (20, 1037131), (751, 27620), (1381, 15020), (1502, 13810), (2762, 7510), (3004, 6905), (3755, 5524)]