256686808

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{617}}^1$

素因数の和:689

約数の個数: 128

約数和(自身を含む): 640742400

約数和(自身を除く): 384055592

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 23, 28, 34, 38, 46, 56, 68, 76, 92, 119, 133, 136, 152, 161, 184, 238, 266, 322, 323, 391, 437, 476, 532, 617, 644, 646, 782, 874, 952, 1064, 1234, 1288, 1292, 1564, 1748, 2261, 2468, 2584, 2737, 3059, 3128, 3496, 4319, 4522, 4936, 5474, 6118, 7429, 8638, 9044, 10489, 10948, 11723, 12236, 14191, 14858, 17276, 18088, 20978, 21896, 23446, 24472, 28382, 29716, 34552, 41956, 46892, 52003, 56764, 59432, 73423, 82061, 83912, 93784, 99337, 104006, 113528, 146846, 164122, 198674, 199291, 208012, 241247, 269629, 293692, 328244, 397348, 398582, 416024, 482494, 539258, 587384, 656488, 794696, 797164, 964988, 1078516, 1395037, 1594328, 1688729, 1887403, 1929976, 2157032, 2790074, 3377458, 3774806, 4583693, 5580148, 6754916, 7549612, 9167386, 11160296, 13509832, 15099224, 18334772, 32085851, 36669544, 64171702, 128343404, 256686808]

約数ペア:

[(1, 256686808), (2, 128343404), (4, 64171702), (7, 36669544), (8, 32085851), (14, 18334772), (17, 15099224), (19, 13509832), (23, 11160296), (28, 9167386), (34, 7549612), (38, 6754916), (46, 5580148), (56, 4583693), (68, 3774806), (76, 3377458), (92, 2790074), (119, 2157032), (133, 1929976), (136, 1887403), (152, 1688729), (161, 1594328), (184, 1395037), (238, 1078516), (266, 964988), (322, 797164), (323, 794696), (391, 656488), (437, 587384), (476, 539258), (532, 482494), (617, 416024), (644, 398582), (646, 397348), (782, 328244), (874, 293692), (952, 269629), (1064, 241247), (1234, 208012), (1288, 199291), (1292, 198674), (1564, 164122), (1748, 146846), (2261, 113528), (2468, 104006), (2584, 99337), (2737, 93784), (3059, 83912), (3128, 82061), (3496, 73423), (4319, 59432), (4522, 56764), (4936, 52003), (5474, 46892), (6118, 41956), (7429, 34552), (8638, 29716), (9044, 28382), (10489, 24472), (10948, 23446), (11723, 21896), (12236, 20978), (14191, 18088), (14858, 17276)]