26420920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15361}}^1$

素因数の和:15415

約数の個数: 32

約数和(自身を含む): 60833520

約数和(自身を除く): 34412600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 15361, 30722, 61444, 76805, 122888, 153610, 307220, 614440, 660523, 1321046, 2642092, 3302615, 5284184, 6605230, 13210460, 26420920]

約数ペア:

[(1, 26420920), (2, 13210460), (4, 6605230), (5, 5284184), (8, 3302615), (10, 2642092), (20, 1321046), (40, 660523), (43, 614440), (86, 307220), (172, 153610), (215, 122888), (344, 76805), (430, 61444), (860, 30722), (1720, 15361)]