21566908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11399}}^1$

素因数の和:11457

約数の個数: 24

約数和(自身を含む): 42134400

約数和(自身を除く): 20567492

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11399, 22798, 45596, 125389, 250778, 490157, 501556, 980314, 1960628, 5391727, 10783454, 21566908]

約数ペア:

[(1, 21566908), (2, 10783454), (4, 5391727), (11, 1960628), (22, 980314), (43, 501556), (44, 490157), (86, 250778), (172, 125389), (473, 45596), (946, 22798), (1892, 11399)]