81540513

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:667

約数の個数: 40

約数和(自身を含む): 127903776

約数和(自身を除く): 46363263

約数列:

[1, 3, 9, 27, 41, 43, 81, 123, 129, 369, 387, 571, 1107, 1161, 1713, 1763, 3321, 3483, 5139, 5289, 15417, 15867, 23411, 24553, 46251, 47601, 70233, 73659, 142803, 210699, 220977, 632097, 662931, 1006673, 1896291, 1988793, 3020019, 9060057, 27180171, 81540513]

約数ペア:

[(1, 81540513), (3, 27180171), (9, 9060057), (27, 3020019), (41, 1988793), (43, 1896291), (81, 1006673), (123, 662931), (129, 632097), (369, 220977), (387, 210699), (571, 142803), (1107, 73659), (1161, 70233), (1713, 47601), (1763, 46251), (3321, 24553), (3483, 23411), (5139, 15867), (5289, 15417)]