18563740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71399}}^1$

素因数の和:71421

約数の個数: 24

約数和(自身を含む): 41983200

約数和(自身を除く): 23419460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71399, 142798, 285596, 356995, 713990, 928187, 1427980, 1856374, 3712748, 4640935, 9281870, 18563740]

約数ペア:

[(1, 18563740), (2, 9281870), (4, 4640935), (5, 3712748), (10, 1856374), (13, 1427980), (20, 928187), (26, 713990), (52, 356995), (65, 285596), (130, 142798), (260, 71399)]