18915917

素因数分解:

${\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:161

約数の個数: 24

約数和(自身を含む): 21698760

約数和(自身を除く): 2782843

約数列:

[1, 17, 29, 37, 61, 289, 493, 629, 1037, 1073, 1769, 2257, 8381, 10693, 17629, 18241, 30073, 38369, 65453, 310097, 511241, 652273, 1112701, 18915917]

約数ペア:

[(1, 18915917), (17, 1112701), (29, 652273), (37, 511241), (61, 310097), (289, 65453), (493, 38369), (629, 30073), (1037, 18241), (1073, 17629), (1769, 10693), (2257, 8381)]