81081776

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{10321}}^1$

素因数の和:10820

約数の個数: 20

約数和(自身を含む): 157431144

約数和(自身を除く): 76349368

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 3928, 7856, 10321, 20642, 41284, 82568, 165136, 5067611, 10135222, 20270444, 40540888, 81081776]

約数ペア:

[(1, 81081776), (2, 40540888), (4, 20270444), (8, 10135222), (16, 5067611), (491, 165136), (982, 82568), (1964, 41284), (3928, 20642), (7856, 10321)]