21788440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28669}}^1$

素因数の和:28699

約数の個数: 32

約数和(自身を含む): 51606000

約数和(自身を除く): 29817560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28669, 57338, 114676, 143345, 229352, 286690, 544711, 573380, 1089422, 1146760, 2178844, 2723555, 4357688, 5447110, 10894220, 21788440]

約数ペア:

[(1, 21788440), (2, 10894220), (4, 5447110), (5, 4357688), (8, 2723555), (10, 2178844), (19, 1146760), (20, 1089422), (38, 573380), (40, 544711), (76, 286690), (95, 229352), (152, 143345), (190, 114676), (380, 57338), (760, 28669)]