678809720

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{361069}}^1$

素因数の和:361127

約数の個数: 32

約数和(自身を含む): 1559822400

約数和(自身を除く): 881012680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 361069, 722138, 1444276, 1805345, 2888552, 3610690, 7221380, 14442760, 16970243, 33940486, 67880972, 84851215, 135761944, 169702430, 339404860, 678809720]

約数ペア:

[(1, 678809720), (2, 339404860), (4, 169702430), (5, 135761944), (8, 84851215), (10, 67880972), (20, 33940486), (40, 16970243), (47, 14442760), (94, 7221380), (188, 3610690), (235, 2888552), (376, 1805345), (470, 1444276), (940, 722138), (1880, 361069)]