20120940020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9229789}}^1$

素因数の和:9229907

約数の個数: 24

約数和(自身を含む): 42641629800

約数和(自身を除く): 22520689780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9229789, 18459578, 36919156, 46148945, 92297890, 184595780, 1006047001, 2012094002, 4024188004, 5030235005, 10060470010, 20120940020]

約数ペア:

[(1, 20120940020), (2, 10060470010), (4, 5030235005), (5, 4024188004), (10, 2012094002), (20, 1006047001), (109, 184595780), (218, 92297890), (436, 46148945), (545, 36919156), (1090, 18459578), (2180, 9229789)]