20480157

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{523}}^1$

素因数の和:777

約数の個数: 24

約数和(自身を含む): 31335200

約数和(自身を除く): 10855043

約数列:

[1, 3, 9, 19, 57, 171, 229, 523, 687, 1569, 2061, 4351, 4707, 9937, 13053, 29811, 39159, 89433, 119767, 359301, 1077903, 2275573, 6826719, 20480157]

約数ペア:

[(1, 20480157), (3, 6826719), (9, 2275573), (19, 1077903), (57, 359301), (171, 119767), (229, 89433), (523, 39159), (687, 29811), (1569, 13053), (2061, 9937), (4351, 4707)]