18735381

素因数分解:

$3^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:383

約数の個数: 40

約数和(自身を含む): 32338944

約数和(自身を除く): 13603563

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 173, 189, 191, 519, 567, 573, 1211, 1337, 1557, 1719, 3633, 4011, 4671, 5157, 10899, 12033, 14013, 15471, 32697, 33043, 36099, 98091, 99129, 108297, 231301, 297387, 693903, 892161, 2081709, 2676483, 6245127, 18735381]

約数ペア:

[(1, 18735381), (3, 6245127), (7, 2676483), (9, 2081709), (21, 892161), (27, 693903), (63, 297387), (81, 231301), (173, 108297), (189, 99129), (191, 98091), (519, 36099), (567, 33043), (573, 32697), (1211, 15471), (1337, 14013), (1557, 12033), (1719, 10899), (3633, 5157), (4011, 4671)]