20121247990

素因数分解:

$2^1\times 5^1\times {\mathrm{4547}}^1\times {\mathrm{442517}}^1$

素因数の和:447071

約数の個数: 16

約数和(自身を含む): 36226293552

約数和(自身を除く): 16105045562

約数列:

[1, 2, 5, 10, 4547, 9094, 22735, 45470, 442517, 885034, 2212585, 4425170, 2012124799, 4024249598, 10060623995, 20121247990]

約数ペア:

[(1, 20121247990), (2, 10060623995), (5, 4024249598), (10, 2012124799), (4547, 4425170), (9094, 2212585), (22735, 885034), (45470, 442517)]