21000978814

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{3997141}}^1$

素因数の和:3997251

約数の個数: 16

約数和(自身を含む): 32808541536

約数和(自身を除く): 11807562722

約数列:

[1, 2, 37, 71, 74, 142, 2627, 5254, 3997141, 7994282, 147894217, 283797011, 295788434, 567594022, 10500489407, 21000978814]

約数ペア:

[(1, 21000978814), (2, 10500489407), (37, 567594022), (71, 295788434), (74, 283797011), (142, 147894217), (2627, 7994282), (5254, 3997141)]