81721656

素因数分解:

$2^3\times 3^3\times {\mathrm{397}}^1\times {\mathrm{953}}^1$

素因数の和:1365

約数の個数: 64

約数和(自身を含む): 227815200

約数和(自身を除く): 146093544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 397, 794, 953, 1191, 1588, 1906, 2382, 2859, 3176, 3573, 3812, 4764, 5718, 7146, 7624, 8577, 9528, 10719, 11436, 14292, 17154, 21438, 22872, 25731, 28584, 34308, 42876, 51462, 68616, 85752, 102924, 205848, 378341, 756682, 1135023, 1513364, 2270046, 3026728, 3405069, 4540092, 6810138, 9080184, 10215207, 13620276, 20430414, 27240552, 40860828, 81721656]

約数ペア:

[(1, 81721656), (2, 40860828), (3, 27240552), (4, 20430414), (6, 13620276), (8, 10215207), (9, 9080184), (12, 6810138), (18, 4540092), (24, 3405069), (27, 3026728), (36, 2270046), (54, 1513364), (72, 1135023), (108, 756682), (216, 378341), (397, 205848), (794, 102924), (953, 85752), (1191, 68616), (1588, 51462), (1906, 42876), (2382, 34308), (2859, 28584), (3176, 25731), (3573, 22872), (3812, 21438), (4764, 17154), (5718, 14292), (7146, 11436), (7624, 10719), (8577, 9528)]