20378787

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{709}}^1$

素因数の和:803

約数の個数: 32

約数和(自身を含む): 32444160

約数和(自身を除く): 12065373

約数列:

[1, 3, 11, 13, 33, 39, 67, 143, 201, 429, 709, 737, 871, 2127, 2211, 2613, 7799, 9217, 9581, 23397, 27651, 28743, 47503, 101387, 142509, 304161, 522533, 617539, 1567599, 1852617, 6792929, 20378787]

約数ペア:

[(1, 20378787), (3, 6792929), (11, 1852617), (13, 1567599), (33, 617539), (39, 522533), (67, 304161), (143, 142509), (201, 101387), (429, 47503), (709, 28743), (737, 27651), (871, 23397), (2127, 9581), (2211, 9217), (2613, 7799)]