20785527

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^2\times {\mathrm{241}}^1$

素因数の和:328

約数の個数: 36

約数和(自身を含む): 35411376

約数和(自身を除く): 14625849

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 241, 259, 333, 723, 777, 1369, 1687, 2169, 2331, 4107, 5061, 8917, 9583, 12321, 15183, 26751, 28749, 62419, 80253, 86247, 187257, 329929, 561771, 989787, 2309503, 2969361, 6928509, 20785527]

約数ペア:

[(1, 20785527), (3, 6928509), (7, 2969361), (9, 2309503), (21, 989787), (37, 561771), (63, 329929), (111, 187257), (241, 86247), (259, 80253), (333, 62419), (723, 28749), (777, 26751), (1369, 15183), (1687, 12321), (2169, 9583), (2331, 8917), (4107, 5061)]