21811426

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:179

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 21089054

約数列:

[1, 2, 7, 13, 14, 26, 37, 41, 74, 79, 82, 91, 158, 182, 259, 287, 481, 518, 533, 553, 574, 962, 1027, 1066, 1106, 1517, 2054, 2923, 3034, 3239, 3367, 3731, 5846, 6478, 6734, 7189, 7462, 10619, 14378, 19721, 20461, 21238, 22673, 37999, 39442, 40922, 42107, 45346, 75998, 84214, 119843, 138047, 239686, 265993, 276094, 294749, 531986, 589498, 838901, 1557959, 1677802, 3115918, 10905713, 21811426]

約数ペア:

[(1, 21811426), (2, 10905713), (7, 3115918), (13, 1677802), (14, 1557959), (26, 838901), (37, 589498), (41, 531986), (74, 294749), (79, 276094), (82, 265993), (91, 239686), (158, 138047), (182, 119843), (259, 84214), (287, 75998), (481, 45346), (518, 42107), (533, 40922), (553, 39442), (574, 37999), (962, 22673), (1027, 21238), (1066, 20461), (1106, 19721), (1517, 14378), (2054, 10619), (2923, 7462), (3034, 7189), (3239, 6734), (3367, 6478), (3731, 5846)]