21056497

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{1811}}^1$

素因数の和:1980

約数の個数: 16

約数和(自身を含む): 26440704

約数和(自身を除く): 5384207

約数列:

[1, 7, 11, 77, 151, 1057, 1661, 1811, 11627, 12677, 19921, 139447, 273461, 1914227, 3008071, 21056497]

約数ペア:

[(1, 21056497), (7, 3008071), (11, 1914227), (77, 273461), (151, 139447), (1057, 19921), (1661, 12677), (1811, 11627)]