20717872

素因数分解:

$2^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1637}}^1$

素因数の和:1765

約数の個数: 40

約数和(自身を含む): 46309536

約数和(自身を除く): 25591664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 113, 226, 452, 791, 904, 1582, 1637, 1808, 3164, 3274, 6328, 6548, 11459, 12656, 13096, 22918, 26192, 45836, 91672, 183344, 184981, 369962, 739924, 1294867, 1479848, 2589734, 2959696, 5179468, 10358936, 20717872]

約数ペア:

[(1, 20717872), (2, 10358936), (4, 5179468), (7, 2959696), (8, 2589734), (14, 1479848), (16, 1294867), (28, 739924), (56, 369962), (112, 184981), (113, 183344), (226, 91672), (452, 45836), (791, 26192), (904, 22918), (1582, 13096), (1637, 12656), (1808, 11459), (3164, 6548), (3274, 6328)]