21507260

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14731}}^1$

素因数の和:14813

約数の個数: 24

約数和(自身を含む): 45787056

約数和(自身を除く): 24279796

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 14731, 29462, 58924, 73655, 147310, 294620, 1075363, 2150726, 4301452, 5376815, 10753630, 21507260]

約数ペア:

[(1, 21507260), (2, 10753630), (4, 5376815), (5, 4301452), (10, 2150726), (20, 1075363), (73, 294620), (146, 147310), (292, 73655), (365, 58924), (730, 29462), (1460, 14731)]