21231628

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43867}}^1$

素因数の和:43893

約数の個数: 18

約数和(自身を含む): 40841108

約数和(自身を除く): 19609480

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43867, 87734, 175468, 482537, 965074, 1930148, 5307907, 10615814, 21231628]

約数ペア:

[(1, 21231628), (2, 10615814), (4, 5307907), (11, 1930148), (22, 965074), (44, 482537), (121, 175468), (242, 87734), (484, 43867)]