21136480

素因数分解:

$2^5\times 5^1\times {\mathrm{132103}}^1$

素因数の和:132118

約数の個数: 24

約数和(自身を含む): 49935312

約数和(自身を除く): 28798832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132103, 264206, 528412, 660515, 1056824, 1321030, 2113648, 2642060, 4227296, 5284120, 10568240, 21136480]

約数ペア:

[(1, 21136480), (2, 10568240), (4, 5284120), (5, 4227296), (8, 2642060), (10, 2113648), (16, 1321030), (20, 1056824), (32, 660515), (40, 528412), (80, 264206), (160, 132103)]