18234385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 24675840

約数和(自身を除く): 6441455

約数列:

[1, 5, 13, 53, 65, 67, 79, 265, 335, 395, 689, 871, 1027, 3445, 3551, 4187, 4355, 5135, 5293, 17755, 20935, 26465, 46163, 54431, 68809, 230815, 272155, 280529, 344045, 1402645, 3646877, 18234385]

約数ペア:

[(1, 18234385), (5, 3646877), (13, 1402645), (53, 344045), (65, 280529), (67, 272155), (79, 230815), (265, 68809), (335, 54431), (395, 46163), (689, 26465), (871, 20935), (1027, 17755), (3445, 5293), (3551, 5135), (4187, 4355)]