20013320

素因数分解:

$2^3\times 5^1\times {\mathrm{500333}}^1$

素因数の和:500344

約数の個数: 16

約数和(自身を含む): 45030060

約数和(自身を除く): 25016740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 500333, 1000666, 2001332, 2501665, 4002664, 5003330, 10006660, 20013320]

約数ペア:

[(1, 20013320), (2, 10006660), (4, 5003330), (5, 4002664), (8, 2501665), (10, 2001332), (20, 1000666), (40, 500333)]