201209020

素因数分解:

$2^2\times 5^1\times {\mathrm{2131}}^1\times {\mathrm{4721}}^1$

素因数の和:6861

約数の個数: 24

約数和(自身を含む): 422826768

約数和(自身を除く): 221617748

約数列:

[1, 2, 4, 5, 10, 20, 2131, 4262, 4721, 8524, 9442, 10655, 18884, 21310, 23605, 42620, 47210, 94420, 10060451, 20120902, 40241804, 50302255, 100604510, 201209020]

約数ペア:

[(1, 201209020), (2, 100604510), (4, 50302255), (5, 40241804), (10, 20120902), (20, 10060451), (2131, 94420), (4262, 47210), (4721, 42620), (8524, 23605), (9442, 21310), (10655, 18884)]