81561584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{2053}}^1$

素因数の和:2265

約数の個数: 40

約数和(自身を含む): 171155712

約数和(自身を除く): 89594128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 191, 208, 382, 764, 1528, 2053, 2483, 3056, 4106, 4966, 8212, 9932, 16424, 19864, 26689, 32848, 39728, 53378, 106756, 213512, 392123, 427024, 784246, 1568492, 3136984, 5097599, 6273968, 10195198, 20390396, 40780792, 81561584]

約数ペア:

[(1, 81561584), (2, 40780792), (4, 20390396), (8, 10195198), (13, 6273968), (16, 5097599), (26, 3136984), (52, 1568492), (104, 784246), (191, 427024), (208, 392123), (382, 213512), (764, 106756), (1528, 53378), (2053, 39728), (2483, 32848), (3056, 26689), (4106, 19864), (4966, 16424), (8212, 9932)]