81612441

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{617}}^1$

素因数の和:723

約数の個数: 40

約数和(自身を含む): 129216384

約数和(自身を除く): 47603943

約数列:

[1, 3, 9, 23, 27, 69, 71, 81, 207, 213, 617, 621, 639, 1633, 1851, 1863, 1917, 4899, 5553, 5751, 14191, 14697, 16659, 42573, 43807, 44091, 49977, 127719, 131421, 132273, 383157, 394263, 1007561, 1149471, 1182789, 3022683, 3548367, 9068049, 27204147, 81612441]

約数ペア:

[(1, 81612441), (3, 27204147), (9, 9068049), (23, 3548367), (27, 3022683), (69, 1182789), (71, 1149471), (81, 1007561), (207, 394263), (213, 383157), (617, 132273), (621, 131421), (639, 127719), (1633, 49977), (1851, 44091), (1863, 43807), (1917, 42573), (4899, 16659), (5553, 14697), (5751, 14191)]