19660984

素因数分解:

$2^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{3221}}^1$

素因数の和:3343

約数の個数: 32

約数和(自身を含む): 42530400

約数和(自身を除く): 22869416

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 109, 218, 436, 763, 872, 1526, 3052, 3221, 6104, 6442, 12884, 22547, 25768, 45094, 90188, 180376, 351089, 702178, 1404356, 2457623, 2808712, 4915246, 9830492, 19660984]

約数ペア:

[(1, 19660984), (2, 9830492), (4, 4915246), (7, 2808712), (8, 2457623), (14, 1404356), (28, 702178), (56, 351089), (109, 180376), (218, 90188), (436, 45094), (763, 25768), (872, 22547), (1526, 12884), (3052, 6442), (3221, 6104)]