19828336

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{997}}^1$

素因数の和:1129

約数の個数: 40

約数和(自身を含む): 42323184

約数和(自身を除く): 22494848

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 113, 176, 226, 452, 904, 997, 1243, 1808, 1994, 2486, 3988, 4972, 7976, 9944, 10967, 15952, 19888, 21934, 43868, 87736, 112661, 175472, 225322, 450644, 901288, 1239271, 1802576, 2478542, 4957084, 9914168, 19828336]

約数ペア:

[(1, 19828336), (2, 9914168), (4, 4957084), (8, 2478542), (11, 1802576), (16, 1239271), (22, 901288), (44, 450644), (88, 225322), (113, 175472), (176, 112661), (226, 87736), (452, 43868), (904, 21934), (997, 19888), (1243, 15952), (1808, 10967), (1994, 9944), (2486, 7976), (3988, 4972)]