81215640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20509}}^1$

素因数の和:20537

約数の個数: 96

約数和(自身を含む): 287960400

約数和(自身を除く): 206744760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 20509, 41018, 61527, 82036, 102545, 123054, 164072, 184581, 205090, 225599, 246108, 307635, 369162, 410180, 451198, 492216, 615270, 676797, 738324, 820360, 902396, 922905, 1127995, 1230540, 1353594, 1476648, 1804792, 1845810, 2030391, 2255990, 2461080, 2707188, 3383985, 3691620, 4060782, 4511980, 5414376, 6767970, 7383240, 8121564, 9023960, 10151955, 13535940, 16243128, 20303910, 27071880, 40607820, 81215640]

約数ペア:

[(1, 81215640), (2, 40607820), (3, 27071880), (4, 20303910), (5, 16243128), (6, 13535940), (8, 10151955), (9, 9023960), (10, 8121564), (11, 7383240), (12, 6767970), (15, 5414376), (18, 4511980), (20, 4060782), (22, 3691620), (24, 3383985), (30, 2707188), (33, 2461080), (36, 2255990), (40, 2030391), (44, 1845810), (45, 1804792), (55, 1476648), (60, 1353594), (66, 1230540), (72, 1127995), (88, 922905), (90, 902396), (99, 820360), (110, 738324), (120, 676797), (132, 615270), (165, 492216), (180, 451198), (198, 410180), (220, 369162), (264, 307635), (330, 246108), (360, 225599), (396, 205090), (440, 184581), (495, 164072), (660, 123054), (792, 102545), (990, 82036), (1320, 61527), (1980, 41018), (3960, 20509)]