19413724

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{40111}}^1$

素因数の和:40137

約数の個数: 18

約数和(自身を含む): 37344272

約数和(自身を除く): 17930548

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 40111, 80222, 160444, 441221, 882442, 1764884, 4853431, 9706862, 19413724]

約数ペア:

[(1, 19413724), (2, 9706862), (4, 4853431), (11, 1764884), (22, 882442), (44, 441221), (121, 160444), (242, 80222), (484, 40111)]