20209977

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1619}}^1$

素因数の和:1717

約数の個数: 24

約数和(自身を含む): 31168800

約数和(自身を除く): 10958823

約数列:

[1, 3, 9, 19, 57, 73, 171, 219, 657, 1387, 1619, 4161, 4857, 12483, 14571, 30761, 92283, 118187, 276849, 354561, 1063683, 2245553, 6736659, 20209977]

約数ペア:

[(1, 20209977), (3, 6736659), (9, 2245553), (19, 1063683), (57, 354561), (73, 276849), (171, 118187), (219, 92283), (657, 30761), (1387, 14571), (1619, 12483), (4161, 4857)]