19948779

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{563}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 30031872

約数和(自身を除く): 10083093

約数列:

[1, 3, 9, 31, 93, 127, 279, 381, 563, 1143, 1689, 3937, 5067, 11811, 17453, 35433, 52359, 71501, 157077, 214503, 643509, 2216531, 6649593, 19948779]

約数ペア:

[(1, 19948779), (3, 6649593), (9, 2216531), (31, 643509), (93, 214503), (127, 157077), (279, 71501), (381, 52359), (563, 35433), (1143, 17453), (1689, 11811), (3937, 5067)]