20906784

素因数分解:

$2^5\times 3^2\times {\mathrm{229}}^1\times {\mathrm{317}}^1$

素因数の和:562

約数の個数: 72

約数和(自身を含む): 59901660

約数和(自身を除く): 38994876

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 229, 288, 317, 458, 634, 687, 916, 951, 1268, 1374, 1832, 1902, 2061, 2536, 2748, 2853, 3664, 3804, 4122, 5072, 5496, 5706, 7328, 7608, 8244, 10144, 10992, 11412, 15216, 16488, 21984, 22824, 30432, 32976, 45648, 65952, 72593, 91296, 145186, 217779, 290372, 435558, 580744, 653337, 871116, 1161488, 1306674, 1742232, 2322976, 2613348, 3484464, 5226696, 6968928, 10453392, 20906784]

約数ペア:

[(1, 20906784), (2, 10453392), (3, 6968928), (4, 5226696), (6, 3484464), (8, 2613348), (9, 2322976), (12, 1742232), (16, 1306674), (18, 1161488), (24, 871116), (32, 653337), (36, 580744), (48, 435558), (72, 290372), (96, 217779), (144, 145186), (229, 91296), (288, 72593), (317, 65952), (458, 45648), (634, 32976), (687, 30432), (916, 22824), (951, 21984), (1268, 16488), (1374, 15216), (1832, 11412), (1902, 10992), (2061, 10144), (2536, 8244), (2748, 7608), (2853, 7328), (3664, 5706), (3804, 5496), (4122, 5072)]