81276728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{45971}}^1$

素因数の和:46007

約数の個数: 32

約数和(自身を含む): 173774160

約数和(自身を除く): 92497432

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 45971, 91942, 183884, 367768, 597623, 781507, 1195246, 1563014, 2390492, 3126028, 4780984, 6252056, 10159591, 20319182, 40638364, 81276728]

約数ペア:

[(1, 81276728), (2, 40638364), (4, 20319182), (8, 10159591), (13, 6252056), (17, 4780984), (26, 3126028), (34, 2390492), (52, 1563014), (68, 1195246), (104, 781507), (136, 597623), (221, 367768), (442, 183884), (884, 91942), (1768, 45971)]