128575107

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:445

約数の個数: 40

約数和(自身を含む): 197936640

約数和(自身を除く): 69361533

約数列:

[1, 3, 9, 27, 71, 79, 81, 213, 237, 283, 639, 711, 849, 1917, 2133, 2547, 5609, 5751, 6399, 7641, 16827, 20093, 22357, 22923, 50481, 60279, 67071, 151443, 180837, 201213, 454329, 542511, 603639, 1587347, 1627533, 1810917, 4762041, 14286123, 42858369, 128575107]

約数ペア:

[(1, 128575107), (3, 42858369), (9, 14286123), (27, 4762041), (71, 1810917), (79, 1627533), (81, 1587347), (213, 603639), (237, 542511), (283, 454329), (639, 201213), (711, 180837), (849, 151443), (1917, 67071), (2133, 60279), (2547, 50481), (5609, 22923), (5751, 22357), (6399, 20093), (7641, 16827)]