21135796

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43669}}^1$

素因数の和:43695

約数の個数: 18

約数和(自身を含む): 40656770

約数和(自身を除く): 19520974

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43669, 87338, 174676, 480359, 960718, 1921436, 5283949, 10567898, 21135796]

約数ペア:

[(1, 21135796), (2, 10567898), (4, 5283949), (11, 1921436), (22, 960718), (44, 480359), (121, 174676), (242, 87338), (484, 43669)]