20305509

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{50891}}^1$

素因数の和:50920

約数の個数: 16

約数和(自身を含む): 32570880

約数和(自身を除く): 12265371

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 50891, 152673, 356237, 966929, 1068711, 2900787, 6768503, 20305509]

約数ペア:

[(1, 20305509), (3, 6768503), (7, 2900787), (19, 1068711), (21, 966929), (57, 356237), (133, 152673), (399, 50891)]