20121479090

素因数分解:

$2^1\times 5^1\times {\mathrm{3109}}^1\times {\mathrm{647201}}^1$

素因数の和:650317

約数の個数: 16

約数和(自身を含む): 36230367960

約数和(自身を除く): 16108888870

約数列:

[1, 2, 5, 10, 3109, 6218, 15545, 31090, 647201, 1294402, 3236005, 6472010, 2012147909, 4024295818, 10060739545, 20121479090]

約数ペア:

[(1, 20121479090), (2, 10060739545), (5, 4024295818), (10, 2012147909), (3109, 6472010), (6218, 3236005), (15545, 1294402), (31090, 647201)]