81972189

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{571}}^1$

素因数の和:1002

約数の個数: 32

約数和(自身を含む): 131331200

約数和(自身を除く): 49359011

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 409, 571, 1227, 1713, 3681, 5139, 5317, 7423, 11043, 15417, 15951, 22269, 47853, 66807, 143559, 200421, 233539, 700617, 2101851, 3036007, 6305553, 9108021, 27324063, 81972189]

約数ペア:

[(1, 81972189), (3, 27324063), (9, 9108021), (13, 6305553), (27, 3036007), (39, 2101851), (117, 700617), (351, 233539), (409, 200421), (571, 143559), (1227, 66807), (1713, 47853), (3681, 22269), (5139, 15951), (5317, 15417), (7423, 11043)]