18665913

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2953}}^1$

素因数の和:3013

約数の個数: 24

約数和(自身を含む): 29634528

約数和(自身を除く): 10968615

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 2953, 6321, 8859, 20671, 62013, 126979, 144697, 380937, 434091, 888853, 2666559, 6221971, 18665913]

約数ペア:

[(1, 18665913), (3, 6221971), (7, 2666559), (21, 888853), (43, 434091), (49, 380937), (129, 144697), (147, 126979), (301, 62013), (903, 20671), (2107, 8859), (2953, 6321)]