20876245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{809}}^1$

素因数の和:1224

約数の個数: 16

約数和(自身を含む): 27079920

約数和(自身を除く): 6203675

約数列:

[1, 5, 13, 65, 397, 809, 1985, 4045, 5161, 10517, 25805, 52585, 321173, 1605865, 4175249, 20876245]

約数ペア:

[(1, 20876245), (5, 4175249), (13, 1605865), (65, 321173), (397, 52585), (809, 25805), (1985, 10517), (4045, 5161)]