21986690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2098

約数の個数: 32

約数和(自身を含む): 43623360

約数和(自身を除く): 21636670

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 1979, 2222, 3958, 5555, 9895, 11110, 19790, 21769, 43538, 108845, 199879, 217690, 399758, 999395, 1998790, 2198669, 4397338, 10993345, 21986690]

約数ペア:

[(1, 21986690), (2, 10993345), (5, 4397338), (10, 2198669), (11, 1998790), (22, 999395), (55, 399758), (101, 217690), (110, 199879), (202, 108845), (505, 43538), (1010, 21769), (1111, 19790), (1979, 11110), (2222, 9895), (3958, 5555)]