81189784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{780671}}^1$

素因数の和:780690

約数の個数: 16

約数和(自身を含む): 163941120

約数和(自身を除く): 82751336

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 780671, 1561342, 3122684, 6245368, 10148723, 20297446, 40594892, 81189784]

約数ペア:

[(1, 81189784), (2, 40594892), (4, 20297446), (8, 10148723), (13, 6245368), (26, 3122684), (52, 1561342), (104, 780671)]