31578057

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 60702720

約数和(自身を除く): 29124663

約数列:

[1, 3, 7, 9, 19, 21, 23, 31, 37, 57, 63, 69, 93, 111, 133, 161, 171, 207, 217, 259, 279, 333, 399, 437, 483, 589, 651, 703, 713, 777, 851, 1147, 1197, 1311, 1449, 1767, 1953, 2109, 2139, 2331, 2553, 3059, 3441, 3933, 4123, 4921, 4991, 5301, 5957, 6327, 6417, 7659, 8029, 9177, 10323, 12369, 13547, 14763, 14973, 16169, 17871, 21793, 24087, 26381, 27531, 37107, 40641, 44289, 44919, 48507, 53613, 65379, 72261, 79143, 94829, 113183, 121923, 145521, 152551, 184667, 196137, 237429, 284487, 339549, 457653, 501239, 554001, 853461, 1018647, 1372959, 1503717, 1662003, 3508673, 4511151, 10526019, 31578057]

約数ペア:

[(1, 31578057), (3, 10526019), (7, 4511151), (9, 3508673), (19, 1662003), (21, 1503717), (23, 1372959), (31, 1018647), (37, 853461), (57, 554001), (63, 501239), (69, 457653), (93, 339549), (111, 284487), (133, 237429), (161, 196137), (171, 184667), (207, 152551), (217, 145521), (259, 121923), (279, 113183), (333, 94829), (399, 79143), (437, 72261), (483, 65379), (589, 53613), (651, 48507), (703, 44919), (713, 44289), (777, 40641), (851, 37107), (1147, 27531), (1197, 26381), (1311, 24087), (1449, 21793), (1767, 17871), (1953, 16169), (2109, 14973), (2139, 14763), (2331, 13547), (2553, 12369), (3059, 10323), (3441, 9177), (3933, 8029), (4123, 7659), (4921, 6417), (4991, 6327), (5301, 5957)]