20121949580

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1243631}}^1$

素因数の和:1244449

約数の個数: 24

約数和(自身を含む): 42308360640

約数和(自身を除く): 22186411060

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 3236, 4045, 8090, 16180, 1243631, 2487262, 4974524, 6218155, 12436310, 24872620, 1006097479, 2012194958, 4024389916, 5030487395, 10060974790, 20121949580]

約数ペア:

[(1, 20121949580), (2, 10060974790), (4, 5030487395), (5, 4024389916), (10, 2012194958), (20, 1006097479), (809, 24872620), (1618, 12436310), (3236, 6218155), (4045, 4974524), (8090, 2487262), (16180, 1243631)]