20790448

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 49193280

約数和(自身を除く): 28402832

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 37, 56, 58, 74, 112, 116, 148, 173, 203, 232, 259, 296, 346, 406, 464, 518, 592, 692, 812, 1036, 1073, 1211, 1384, 1624, 2072, 2146, 2422, 2768, 3248, 4144, 4292, 4844, 5017, 6401, 7511, 8584, 9688, 10034, 12802, 15022, 17168, 19376, 20068, 25604, 30044, 35119, 40136, 44807, 51208, 60088, 70238, 80272, 89614, 102416, 120176, 140476, 179228, 185629, 280952, 358456, 371258, 561904, 716912, 742516, 1299403, 1485032, 2598806, 2970064, 5197612, 10395224, 20790448]

約数ペア:

[(1, 20790448), (2, 10395224), (4, 5197612), (7, 2970064), (8, 2598806), (14, 1485032), (16, 1299403), (28, 742516), (29, 716912), (37, 561904), (56, 371258), (58, 358456), (74, 280952), (112, 185629), (116, 179228), (148, 140476), (173, 120176), (203, 102416), (232, 89614), (259, 80272), (296, 70238), (346, 60088), (406, 51208), (464, 44807), (518, 40136), (592, 35119), (692, 30044), (812, 25604), (1036, 20068), (1073, 19376), (1211, 17168), (1384, 15022), (1624, 12802), (2072, 10034), (2146, 9688), (2422, 8584), (2768, 7511), (3248, 6401), (4144, 5017), (4292, 4844)]