21257392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102199}}^1$

素因数の和:102220

約数の個数: 20

約数和(自身を含む): 44354800

約数和(自身を除く): 23097408

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102199, 204398, 408796, 817592, 1328587, 1635184, 2657174, 5314348, 10628696, 21257392]

約数ペア:

[(1, 21257392), (2, 10628696), (4, 5314348), (8, 2657174), (13, 1635184), (16, 1328587), (26, 817592), (52, 408796), (104, 204398), (208, 102199)]