81060280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:389

約数の個数: 128

約数和(自身を含む): 223534080

約数和(自身を除く): 142473800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 41, 46, 56, 70, 82, 92, 115, 140, 161, 164, 184, 205, 230, 280, 287, 307, 322, 328, 410, 460, 574, 614, 644, 805, 820, 920, 943, 1148, 1228, 1288, 1435, 1535, 1610, 1640, 1886, 2149, 2296, 2456, 2870, 3070, 3220, 3772, 4298, 4715, 5740, 6140, 6440, 6601, 7061, 7544, 8596, 9430, 10745, 11480, 12280, 12587, 13202, 14122, 17192, 18860, 21490, 25174, 26404, 28244, 33005, 35305, 37720, 42980, 49427, 50348, 52808, 56488, 62935, 66010, 70610, 85960, 88109, 98854, 100696, 125870, 132020, 141220, 176218, 197708, 247135, 251740, 264040, 282440, 289501, 352436, 395416, 440545, 494270, 503480, 579002, 704872, 881090, 988540, 1158004, 1447505, 1762180, 1977080, 2026507, 2316008, 2895010, 3524360, 4053014, 5790020, 8106028, 10132535, 11580040, 16212056, 20265070, 40530140, 81060280]

約数ペア:

[(1, 81060280), (2, 40530140), (4, 20265070), (5, 16212056), (7, 11580040), (8, 10132535), (10, 8106028), (14, 5790020), (20, 4053014), (23, 3524360), (28, 2895010), (35, 2316008), (40, 2026507), (41, 1977080), (46, 1762180), (56, 1447505), (70, 1158004), (82, 988540), (92, 881090), (115, 704872), (140, 579002), (161, 503480), (164, 494270), (184, 440545), (205, 395416), (230, 352436), (280, 289501), (287, 282440), (307, 264040), (322, 251740), (328, 247135), (410, 197708), (460, 176218), (574, 141220), (614, 132020), (644, 125870), (805, 100696), (820, 98854), (920, 88109), (943, 85960), (1148, 70610), (1228, 66010), (1288, 62935), (1435, 56488), (1535, 52808), (1610, 50348), (1640, 49427), (1886, 42980), (2149, 37720), (2296, 35305), (2456, 33005), (2870, 28244), (3070, 26404), (3220, 25174), (3772, 21490), (4298, 18860), (4715, 17192), (5740, 14122), (6140, 13202), (6440, 12587), (6601, 12280), (7061, 11480), (7544, 10745), (8596, 9430)]