216891356

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{80809}}^1$

素因数の和:80885

約数の個数: 24

約数和(自身を含む): 420858480

約数和(自身を除く): 203967124

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 80809, 161618, 323236, 888899, 1777798, 3555596, 4929349, 9858698, 19717396, 54222839, 108445678, 216891356]

約数ペア:

[(1, 216891356), (2, 108445678), (4, 54222839), (11, 19717396), (22, 9858698), (44, 4929349), (61, 3555596), (122, 1777798), (244, 888899), (671, 323236), (1342, 161618), (2684, 80809)]