18744008980

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2174479}}^1$

素因数の和:2174919

約数の個数: 24

約数和(自身を含む): 39453765120

約数和(自身を除く): 20709756140

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 8620, 2174479, 4348958, 8697916, 10872395, 21744790, 43489580, 937200449, 1874400898, 3748801796, 4686002245, 9372004490, 18744008980]

約数ペア:

[(1, 18744008980), (2, 9372004490), (4, 4686002245), (5, 3748801796), (10, 1874400898), (20, 937200449), (431, 43489580), (862, 21744790), (1724, 10872395), (2155, 8697916), (4310, 4348958), (8620, 2174479)]