1728556557

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:698

約数の個数: 64

約数和(自身を含む): 2896072704

約数和(自身を除く): 1167516147

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 257, 273, 347, 497, 771, 923, 1041, 1491, 1799, 2429, 2769, 3341, 4511, 5397, 6461, 7287, 10023, 13533, 18247, 19383, 23387, 24637, 31577, 54741, 70161, 73911, 89179, 94731, 127729, 172459, 237211, 267537, 320281, 383187, 517377, 624253, 711633, 960843, 1159327, 1660477, 1872759, 2241967, 3477981, 4981431, 6331709, 6725901, 8115289, 18995127, 24345867, 44321963, 82312217, 132965889, 246936651, 576185519, 1728556557]

約数ペア:

[(1, 1728556557), (3, 576185519), (7, 246936651), (13, 132965889), (21, 82312217), (39, 44321963), (71, 24345867), (91, 18995127), (213, 8115289), (257, 6725901), (273, 6331709), (347, 4981431), (497, 3477981), (771, 2241967), (923, 1872759), (1041, 1660477), (1491, 1159327), (1799, 960843), (2429, 711633), (2769, 624253), (3341, 517377), (4511, 383187), (5397, 320281), (6461, 267537), (7287, 237211), (10023, 172459), (13533, 127729), (18247, 94731), (19383, 89179), (23387, 73911), (24637, 70161), (31577, 54741)]