18845911

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 24330240

約数和(自身を除く): 5484329

約数列:

[1, 7, 17, 29, 43, 119, 127, 203, 301, 493, 731, 889, 1247, 2159, 3451, 3683, 5117, 5461, 8729, 15113, 21199, 25781, 38227, 62611, 92837, 148393, 158369, 438277, 649859, 1108583, 2692273, 18845911]

約数ペア:

[(1, 18845911), (7, 2692273), (17, 1108583), (29, 649859), (43, 438277), (119, 158369), (127, 148393), (203, 92837), (301, 62611), (493, 38227), (731, 25781), (889, 21199), (1247, 15113), (2159, 8729), (3451, 5461), (3683, 5117)]