20121100

素因数分解:

$2^2\times 5^2\times {\mathrm{201211}}^1$

素因数の和:201225

約数の個数: 18

約数和(自身を含む): 43663004

約数和(自身を除く): 23541904

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 201211, 402422, 804844, 1006055, 2012110, 4024220, 5030275, 10060550, 20121100]

約数ペア:

[(1, 20121100), (2, 10060550), (4, 5030275), (5, 4024220), (10, 2012110), (20, 1006055), (25, 804844), (50, 402422), (100, 201211)]