21074812

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43543}}^1$

素因数の和:43569

約数の個数: 18

約数和(自身を含む): 40539464

約数和(自身を除く): 19464652

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43543, 87086, 174172, 478973, 957946, 1915892, 5268703, 10537406, 21074812]

約数ペア:

[(1, 21074812), (2, 10537406), (4, 5268703), (11, 1915892), (22, 957946), (44, 478973), (121, 174172), (242, 87086), (484, 43543)]