20777778

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1601}}^1$

素因数の和:1719

約数の個数: 48

約数和(自身を含む): 51981696

約数和(自身を除く): 31203918

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 103, 126, 206, 309, 618, 721, 927, 1442, 1601, 1854, 2163, 3202, 4326, 4803, 6489, 9606, 11207, 12978, 14409, 22414, 28818, 33621, 67242, 100863, 164903, 201726, 329806, 494709, 989418, 1154321, 1484127, 2308642, 2968254, 3462963, 6925926, 10388889, 20777778]

約数ペア:

[(1, 20777778), (2, 10388889), (3, 6925926), (6, 3462963), (7, 2968254), (9, 2308642), (14, 1484127), (18, 1154321), (21, 989418), (42, 494709), (63, 329806), (103, 201726), (126, 164903), (206, 100863), (309, 67242), (618, 33621), (721, 28818), (927, 22414), (1442, 14409), (1601, 12978), (1854, 11207), (2163, 9606), (3202, 6489), (4326, 4803)]