20051255

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 8616265

約数列:

[1, 5, 7, 35, 41, 89, 157, 205, 287, 445, 623, 785, 1099, 1435, 3115, 3649, 5495, 6437, 13973, 18245, 25543, 32185, 45059, 69865, 97811, 127715, 225295, 489055, 572893, 2864465, 4010251, 20051255]

約数ペア:

[(1, 20051255), (5, 4010251), (7, 2864465), (35, 572893), (41, 489055), (89, 225295), (157, 127715), (205, 97811), (287, 69865), (445, 45059), (623, 32185), (785, 25543), (1099, 18245), (1435, 13973), (3115, 6437), (3649, 5495)]