28289456

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{491}}^1$

素因数の和:789

約数の個数: 40

約数和(自身を含む): 59360784

約数和(自身を除く): 31071328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 277, 491, 554, 982, 1108, 1964, 2216, 3601, 3928, 4432, 6383, 7202, 7856, 12766, 14404, 25532, 28808, 51064, 57616, 102128, 136007, 272014, 544028, 1088056, 1768091, 2176112, 3536182, 7072364, 14144728, 28289456]

約数ペア:

[(1, 28289456), (2, 14144728), (4, 7072364), (8, 3536182), (13, 2176112), (16, 1768091), (26, 1088056), (52, 544028), (104, 272014), (208, 136007), (277, 102128), (491, 57616), (554, 51064), (982, 28808), (1108, 25532), (1964, 14404), (2216, 12766), (3601, 7856), (3928, 7202), (4432, 6383)]