20515330

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{443}}^1$

素因数の和:882

約数の個数: 32

約数和(自身を含む): 40471488

約数和(自身を除く): 19956158

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 421, 443, 842, 886, 2105, 2215, 4210, 4430, 4631, 4873, 9262, 9746, 23155, 24365, 46310, 48730, 186503, 373006, 932515, 1865030, 2051533, 4103066, 10257665, 20515330]

約数ペア:

[(1, 20515330), (2, 10257665), (5, 4103066), (10, 2051533), (11, 1865030), (22, 932515), (55, 373006), (110, 186503), (421, 48730), (443, 46310), (842, 24365), (886, 23155), (2105, 9746), (2215, 9262), (4210, 4873), (4430, 4631)]