21490784

素因数分解:

$2^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2593}}^1$

素因数の和:2647

約数の個数: 48

約数和(自身を含む): 49680288

約数和(自身を除く): 28189504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 74, 112, 148, 224, 259, 296, 518, 592, 1036, 1184, 2072, 2593, 4144, 5186, 8288, 10372, 18151, 20744, 36302, 41488, 72604, 82976, 95941, 145208, 191882, 290416, 383764, 580832, 671587, 767528, 1343174, 1535056, 2686348, 3070112, 5372696, 10745392, 21490784]

約数ペア:

[(1, 21490784), (2, 10745392), (4, 5372696), (7, 3070112), (8, 2686348), (14, 1535056), (16, 1343174), (28, 767528), (32, 671587), (37, 580832), (56, 383764), (74, 290416), (112, 191882), (148, 145208), (224, 95941), (259, 82976), (296, 72604), (518, 41488), (592, 36302), (1036, 20744), (1184, 18151), (2072, 10372), (2593, 8288), (4144, 5186)]