19916728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{191507}}^1$

素因数の和:191526

約数の個数: 16

約数和(自身を含む): 40216680

約数和(自身を除く): 20299952

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 191507, 383014, 766028, 1532056, 2489591, 4979182, 9958364, 19916728]

約数ペア:

[(1, 19916728), (2, 9958364), (4, 4979182), (8, 2489591), (13, 1532056), (26, 766028), (52, 383014), (104, 191507)]