18638081

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{229}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 23912640

約数和(自身を除く): 5274559

約数列:

[1, 7, 11, 49, 77, 151, 229, 539, 1057, 1603, 1661, 2519, 7399, 11221, 11627, 17633, 34579, 81389, 123431, 242053, 380369, 1694371, 2662583, 18638081]

約数ペア:

[(1, 18638081), (7, 2662583), (11, 1694371), (49, 380369), (77, 242053), (151, 123431), (229, 81389), (539, 34579), (1057, 17633), (1603, 11627), (1661, 11221), (2519, 7399)]