19864975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3217}}^1$

素因数の和:3259

約数の個数: 24

約数和(自身を含む): 27932240

約数和(自身を除く): 8067265

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3217, 6175, 16085, 41821, 61123, 80425, 209105, 305615, 794599, 1045525, 1528075, 3972995, 19864975]

約数ペア:

[(1, 19864975), (5, 3972995), (13, 1528075), (19, 1045525), (25, 794599), (65, 305615), (95, 209105), (247, 80425), (325, 61123), (475, 41821), (1235, 16085), (3217, 6175)]