21657500

素因数分解:

$2^2\times 5^4\times {\mathrm{8663}}^1$

素因数の和:8687

約数の個数: 30

約数和(自身を含む): 47366088

約数和(自身を除く): 25708588

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8663, 17326, 34652, 43315, 86630, 173260, 216575, 433150, 866300, 1082875, 2165750, 4331500, 5414375, 10828750, 21657500]

約数ペア:

[(1, 21657500), (2, 10828750), (4, 5414375), (5, 4331500), (10, 2165750), (20, 1082875), (25, 866300), (50, 433150), (100, 216575), (125, 173260), (250, 86630), (500, 43315), (625, 34652), (1250, 17326), (2500, 8663)]