20525420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25031}}^1$

素因数の和:25081

約数の個数: 24

約数和(自身を含む): 44156448

約数和(自身を除く): 23631028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25031, 50062, 100124, 125155, 250310, 500620, 1026271, 2052542, 4105084, 5131355, 10262710, 20525420]

約数ペア:

[(1, 20525420), (2, 10262710), (4, 5131355), (5, 4105084), (10, 2052542), (20, 1026271), (41, 500620), (82, 250310), (164, 125155), (205, 100124), (410, 50062), (820, 25031)]