19957581

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{16673}}^1$

素因数の和:16705

約数の個数: 24

約数和(自身を含む): 34681920

約数和(自身を除く): 14724339

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 16673, 50019, 116711, 150057, 316787, 350133, 950361, 1050399, 2217509, 2851083, 6652527, 19957581]

約数ペア:

[(1, 19957581), (3, 6652527), (7, 2851083), (9, 2217509), (19, 1050399), (21, 950361), (57, 350133), (63, 316787), (133, 150057), (171, 116711), (399, 50019), (1197, 16673)]