17686431

素因数分解:

$3^4\times 7^1\times {\mathrm{31193}}^1$

素因数の和:31212

約数の個数: 20

約数和(自身を含む): 30195792

約数和(自身を除く): 12509361

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 31193, 93579, 218351, 280737, 655053, 842211, 1965159, 2526633, 5895477, 17686431]

約数ペア:

[(1, 17686431), (3, 5895477), (7, 2526633), (9, 1965159), (21, 842211), (27, 655053), (63, 280737), (81, 218351), (189, 93579), (567, 31193)]