20121653870

素因数分解:

$2^1\times 5^1\times {\mathrm{2029}}^1\times {\mathrm{991703}}^1$

素因数の和:993739

約数の個数: 16

約数和(自身を含む): 36236864160

約数和(自身を除く): 16115210290

約数列:

[1, 2, 5, 10, 2029, 4058, 10145, 20290, 991703, 1983406, 4958515, 9917030, 2012165387, 4024330774, 10060826935, 20121653870]

約数ペア:

[(1, 20121653870), (2, 10060826935), (5, 4024330774), (10, 2012165387), (2029, 9917030), (4058, 4958515), (10145, 1983406), (20290, 991703)]