12840460

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3259}}^1$

素因数の和:3465

約数の個数: 24

約数和(自身を含む): 27110160

約数和(自身を除く): 14269700

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3259, 3940, 6518, 13036, 16295, 32590, 65180, 642023, 1284046, 2568092, 3210115, 6420230, 12840460]

約数ペア:

[(1, 12840460), (2, 6420230), (4, 3210115), (5, 2568092), (10, 1284046), (20, 642023), (197, 65180), (394, 32590), (788, 16295), (985, 13036), (1970, 6518), (3259, 3940)]