21257642015

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1\times {\mathrm{370439}}^1$

素因数の和:370966

約数の個数: 16

約数和(自身を含む): 26671680000

約数和(自身を除く): 5414037985

約数列:

[1, 5, 23, 115, 499, 2495, 11477, 57385, 370439, 1852195, 8520097, 42600485, 184849061, 924245305, 4251528403, 21257642015]

約数ペア:

[(1, 21257642015), (5, 4251528403), (23, 924245305), (115, 184849061), (499, 42600485), (2495, 8520097), (11477, 1852195), (57385, 370439)]