21081104

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{10889}}^1$

素因数の和:10919

約数の個数: 30

約数和(自身を含む): 44899470

約数和(自身を除く): 23818366

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 121, 176, 242, 484, 968, 1936, 10889, 21778, 43556, 87112, 119779, 174224, 239558, 479116, 958232, 1317569, 1916464, 2635138, 5270276, 10540552, 21081104]

約数ペア:

[(1, 21081104), (2, 10540552), (4, 5270276), (8, 2635138), (11, 1916464), (16, 1317569), (22, 958232), (44, 479116), (88, 239558), (121, 174224), (176, 119779), (242, 87112), (484, 43556), (968, 21778), (1936, 10889)]