20716251

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{21379}}^1$

素因数の和:21418

約数の個数: 16

約数和(自身を含む): 30787200

約数和(自身を除く): 10070949

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 21379, 64137, 363443, 406201, 1090329, 1218603, 6905417, 20716251]

約数ペア:

[(1, 20716251), (3, 6905417), (17, 1218603), (19, 1090329), (51, 406201), (57, 363443), (323, 64137), (969, 21379)]