19717908

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 55351296

約数和(自身を除く): 35633388

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 53, 84, 86, 103, 106, 129, 159, 172, 206, 212, 258, 301, 309, 318, 371, 412, 516, 602, 618, 636, 721, 742, 903, 1113, 1204, 1236, 1442, 1484, 1806, 2163, 2226, 2279, 2884, 3612, 4326, 4429, 4452, 4558, 5459, 6837, 8652, 8858, 9116, 10918, 13287, 13674, 15953, 16377, 17716, 21836, 26574, 27348, 31003, 31906, 32754, 38213, 47859, 53148, 62006, 63812, 65508, 76426, 93009, 95718, 114639, 124012, 152852, 186018, 191436, 229278, 234737, 372036, 458556, 469474, 704211, 938948, 1408422, 1643159, 2816844, 3286318, 4929477, 6572636, 9858954, 19717908]

約数ペア:

[(1, 19717908), (2, 9858954), (3, 6572636), (4, 4929477), (6, 3286318), (7, 2816844), (12, 1643159), (14, 1408422), (21, 938948), (28, 704211), (42, 469474), (43, 458556), (53, 372036), (84, 234737), (86, 229278), (103, 191436), (106, 186018), (129, 152852), (159, 124012), (172, 114639), (206, 95718), (212, 93009), (258, 76426), (301, 65508), (309, 63812), (318, 62006), (371, 53148), (412, 47859), (516, 38213), (602, 32754), (618, 31906), (636, 31003), (721, 27348), (742, 26574), (903, 21836), (1113, 17716), (1204, 16377), (1236, 15953), (1442, 13674), (1484, 13287), (1806, 10918), (2163, 9116), (2226, 8858), (2279, 8652), (2884, 6837), (3612, 5459), (4326, 4558), (4429, 4452)]