19720233

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2957}}^1$

素因数の和:2998

約数の個数: 32

約数和(自身を含む): 33129600

約数和(自身を除く): 13409367

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 171, 247, 351, 513, 741, 2223, 2957, 6669, 8871, 26613, 38441, 56183, 79839, 115323, 168549, 345969, 505647, 730379, 1037907, 1516941, 2191137, 6573411, 19720233]

約数ペア:

[(1, 19720233), (3, 6573411), (9, 2191137), (13, 1516941), (19, 1037907), (27, 730379), (39, 505647), (57, 345969), (117, 168549), (171, 115323), (247, 79839), (351, 56183), (513, 38441), (741, 26613), (2223, 8871), (2957, 6669)]