51891905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{311}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 71705088

約数和(自身を除く): 19813183

約数列:

[1, 5, 13, 17, 65, 85, 151, 221, 311, 755, 1105, 1555, 1963, 2567, 4043, 5287, 9815, 12835, 20215, 26435, 33371, 46961, 68731, 166855, 234805, 343655, 610493, 798337, 3052465, 3991685, 10378381, 51891905]

約数ペア:

[(1, 51891905), (5, 10378381), (13, 3991685), (17, 3052465), (65, 798337), (85, 610493), (151, 343655), (221, 234805), (311, 166855), (755, 68731), (1105, 46961), (1555, 33371), (1963, 26435), (2567, 20215), (4043, 12835), (5287, 9815)]