81251208

素因数分解:

$2^3\times 3^3\times {\mathrm{389}}^1\times {\mathrm{967}}^1$

素因数の和:1371

約数の個数: 64

約数和(自身を含む): 226512000

約数和(自身を除く): 145260792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 389, 778, 967, 1167, 1556, 1934, 2334, 2901, 3112, 3501, 3868, 4668, 5802, 7002, 7736, 8703, 9336, 10503, 11604, 14004, 17406, 21006, 23208, 26109, 28008, 34812, 42012, 52218, 69624, 84024, 104436, 208872, 376163, 752326, 1128489, 1504652, 2256978, 3009304, 3385467, 4513956, 6770934, 9027912, 10156401, 13541868, 20312802, 27083736, 40625604, 81251208]

約数ペア:

[(1, 81251208), (2, 40625604), (3, 27083736), (4, 20312802), (6, 13541868), (8, 10156401), (9, 9027912), (12, 6770934), (18, 4513956), (24, 3385467), (27, 3009304), (36, 2256978), (54, 1504652), (72, 1128489), (108, 752326), (216, 376163), (389, 208872), (778, 104436), (967, 84024), (1167, 69624), (1556, 52218), (1934, 42012), (2334, 34812), (2901, 28008), (3112, 26109), (3501, 23208), (3868, 21006), (4668, 17406), (5802, 14004), (7002, 11604), (7736, 10503), (8703, 9336)]