20120900

素因数分解:

$2^2\times 5^2\times {\mathrm{201209}}^1$

素因数の和:201223

約数の個数: 18

約数和(自身を含む): 43662570

約数和(自身を除く): 23541670

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 201209, 402418, 804836, 1006045, 2012090, 4024180, 5030225, 10060450, 20120900]

約数ペア:

[(1, 20120900), (2, 10060450), (4, 5030225), (5, 4024180), (10, 2012090), (20, 1006045), (25, 804836), (50, 402418), (100, 201209)]