81660879

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{769}}^1$

素因数の和:826

約数の個数: 48

約数和(自身を含む): 134534400

約数和(自身を除く): 52873521

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 207, 243, 437, 513, 621, 769, 1311, 1539, 1863, 2307, 3933, 4617, 5589, 6921, 11799, 14611, 17687, 20763, 35397, 43833, 53061, 62289, 106191, 131499, 159183, 186867, 336053, 394497, 477549, 1008159, 1183491, 1432647, 3024477, 3550473, 4297941, 9073431, 27220293, 81660879]

約数ペア:

[(1, 81660879), (3, 27220293), (9, 9073431), (19, 4297941), (23, 3550473), (27, 3024477), (57, 1432647), (69, 1183491), (81, 1008159), (171, 477549), (207, 394497), (243, 336053), (437, 186867), (513, 159183), (621, 131499), (769, 106191), (1311, 62289), (1539, 53061), (1863, 43833), (2307, 35397), (3933, 20763), (4617, 17687), (5589, 14611), (6921, 11799)]