20995220

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{2087}}^1$

素因数の和:2599

約数の個数: 24

約数和(自身を含む): 44198784

約数和(自身を除く): 23203564

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 2012, 2087, 2515, 4174, 5030, 8348, 10060, 10435, 20870, 41740, 1049761, 2099522, 4199044, 5248805, 10497610, 20995220]

約数ペア:

[(1, 20995220), (2, 10497610), (4, 5248805), (5, 4199044), (10, 2099522), (20, 1049761), (503, 41740), (1006, 20870), (2012, 10435), (2087, 10060), (2515, 8348), (4174, 5030)]