247016875

素因数分解:

$5^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 356285952

約数和(自身を除く): 109269077

約数列:

[1, 5, 7, 25, 35, 125, 131, 175, 431, 625, 655, 875, 917, 2155, 3017, 3275, 4375, 4585, 10775, 15085, 16375, 22925, 53875, 56461, 75425, 81875, 114625, 269375, 282305, 377125, 395227, 573125, 1411525, 1885625, 1976135, 7057625, 9880675, 35288125, 49403375, 247016875]

約数ペア:

[(1, 247016875), (5, 49403375), (7, 35288125), (25, 9880675), (35, 7057625), (125, 1976135), (131, 1885625), (175, 1411525), (431, 573125), (625, 395227), (655, 377125), (875, 282305), (917, 269375), (2155, 114625), (3017, 81875), (3275, 75425), (4375, 56461), (4585, 53875), (10775, 22925), (15085, 16375)]