8678390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 18468000

約数和(自身を除く): 9789610

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 89, 98, 178, 199, 245, 398, 445, 490, 623, 890, 995, 1246, 1393, 1990, 2786, 3115, 4361, 6230, 6965, 8722, 9751, 13930, 17711, 19502, 21805, 35422, 43610, 48755, 88555, 97510, 123977, 177110, 247954, 619885, 867839, 1239770, 1735678, 4339195, 8678390]

約数ペア:

[(1, 8678390), (2, 4339195), (5, 1735678), (7, 1239770), (10, 867839), (14, 619885), (35, 247954), (49, 177110), (70, 123977), (89, 97510), (98, 88555), (178, 48755), (199, 43610), (245, 35422), (398, 21805), (445, 19502), (490, 17711), (623, 13930), (890, 9751), (995, 8722), (1246, 6965), (1393, 6230), (1990, 4361), (2786, 3115)]