21440680

素因数分解:

$2^3\times 5^1\times {\mathrm{536017}}^1$

素因数の和:536028

約数の個数: 16

約数和(自身を含む): 48241620

約数和(自身を除く): 26800940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 536017, 1072034, 2144068, 2680085, 4288136, 5360170, 10720340, 21440680]

約数ペア:

[(1, 21440680), (2, 10720340), (4, 5360170), (5, 4288136), (8, 2680085), (10, 2144068), (20, 1072034), (40, 536017)]