209870012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{78193}}^1$

素因数の和:78269

約数の個数: 24

約数和(自身を含む): 407234352

約数和(自身を除く): 197364340

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 78193, 156386, 312772, 860123, 1720246, 3440492, 4769773, 9539546, 19079092, 52467503, 104935006, 209870012]

約数ペア:

[(1, 209870012), (2, 104935006), (4, 52467503), (11, 19079092), (22, 9539546), (44, 4769773), (61, 3440492), (122, 1720246), (244, 860123), (671, 312772), (1342, 156386), (2684, 78193)]