21000746728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201930257}}^1$

素因数の和:201930276

約数の個数: 16

約数和(自身を含む): 42405354180

約数和(自身を除く): 21404607452

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201930257, 403860514, 807721028, 1615442056, 2625093341, 5250186682, 10500373364, 21000746728]

約数ペア:

[(1, 21000746728), (2, 10500373364), (4, 5250186682), (8, 2625093341), (13, 1615442056), (26, 807721028), (52, 403860514), (104, 201930257)]