21612280

素因数分解:

$2^3\times 5^1\times {\mathrm{540307}}^1$

素因数の和:540318

約数の個数: 16

約数和(自身を含む): 48627720

約数和(自身を除く): 27015440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540307, 1080614, 2161228, 2701535, 4322456, 5403070, 10806140, 21612280]

約数ペア:

[(1, 21612280), (2, 10806140), (4, 5403070), (5, 4322456), (8, 2701535), (10, 2161228), (20, 1080614), (40, 540307)]