19389861

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:367

約数の個数: 40

約数和(自身を含む): 31305120

約数和(自身を除く): 11915259

約数列:

[1, 3, 9, 19, 27, 43, 57, 81, 129, 171, 293, 387, 513, 817, 879, 1161, 1539, 2451, 2637, 3483, 5567, 7353, 7911, 12599, 16701, 22059, 23733, 37797, 50103, 66177, 113391, 150309, 239381, 340173, 450927, 718143, 1020519, 2154429, 6463287, 19389861]

約数ペア:

[(1, 19389861), (3, 6463287), (9, 2154429), (19, 1020519), (27, 718143), (43, 450927), (57, 340173), (81, 239381), (129, 150309), (171, 113391), (293, 66177), (387, 50103), (513, 37797), (817, 23733), (879, 22059), (1161, 16701), (1539, 12599), (2451, 7911), (2637, 7353), (3483, 5567)]