20519793

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8803}}^1$

素因数の和:8853

約数の個数: 24

約数和(自身を含む): 34793408

約数和(自身を除く): 14273615

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 8803, 26409, 61621, 79227, 184863, 325711, 554589, 977133, 2279977, 2931399, 6839931, 20519793]

約数ペア:

[(1, 20519793), (3, 6839931), (7, 2931399), (9, 2279977), (21, 977133), (37, 554589), (63, 325711), (111, 184863), (259, 79227), (333, 61621), (777, 26409), (2331, 8803)]