9978220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{271}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 24127488

約数和(自身を除く): 14149268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 271, 526, 542, 1052, 1084, 1315, 1355, 1841, 1897, 2630, 2710, 3682, 3794, 5260, 5420, 7364, 7588, 9205, 9485, 18410, 18970, 36820, 37940, 71273, 142546, 285092, 356365, 498911, 712730, 997822, 1425460, 1995644, 2494555, 4989110, 9978220]

約数ペア:

[(1, 9978220), (2, 4989110), (4, 2494555), (5, 1995644), (7, 1425460), (10, 997822), (14, 712730), (20, 498911), (28, 356365), (35, 285092), (70, 142546), (140, 71273), (263, 37940), (271, 36820), (526, 18970), (542, 18410), (1052, 9485), (1084, 9205), (1315, 7588), (1355, 7364), (1841, 5420), (1897, 5260), (2630, 3794), (2710, 3682)]