13340840

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1693}}^1$

素因数の和:1901

約数の個数: 32

約数和(自身を含む): 30187080

約数和(自身を除く): 16846240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1693, 1970, 3386, 3940, 6772, 7880, 8465, 13544, 16930, 33860, 67720, 333521, 667042, 1334084, 1667605, 2668168, 3335210, 6670420, 13340840]

約数ペア:

[(1, 13340840), (2, 6670420), (4, 3335210), (5, 2668168), (8, 1667605), (10, 1334084), (20, 667042), (40, 333521), (197, 67720), (394, 33860), (788, 16930), (985, 13544), (1576, 8465), (1693, 7880), (1970, 6772), (3386, 3940)]