21711645

素因数分解:

$3^4\times 5^1\times {\mathrm{53609}}^1$

素因数の和:53626

約数の個数: 20

約数和(自身を含む): 38920860

約数和(自身を除く): 17209215

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53609, 160827, 268045, 482481, 804135, 1447443, 2412405, 4342329, 7237215, 21711645]

約数ペア:

[(1, 21711645), (3, 7237215), (5, 4342329), (9, 2412405), (15, 1447443), (27, 804135), (45, 482481), (81, 268045), (135, 160827), (405, 53609)]