21789690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55871}}^1$

素因数の和:55894

約数の個数: 32

約数和(自身を含む): 56318976

約数和(自身を除く): 34529286

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55871, 111742, 167613, 279355, 335226, 558710, 726323, 838065, 1452646, 1676130, 2178969, 3631615, 4357938, 7263230, 10894845, 21789690]

約数ペア:

[(1, 21789690), (2, 10894845), (3, 7263230), (5, 4357938), (6, 3631615), (10, 2178969), (13, 1676130), (15, 1452646), (26, 838065), (30, 726323), (39, 558710), (65, 335226), (78, 279355), (130, 167613), (195, 111742), (390, 55871)]