215997947

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1999}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 255360000

約数和(自身を除く): 39362053

約数列:

[1, 11, 19, 47, 121, 209, 517, 893, 1999, 2299, 5687, 9823, 21989, 37981, 93953, 108053, 241879, 417791, 1033483, 1785107, 4595701, 11368313, 19636177, 215997947]

約数ペア:

[(1, 215997947), (11, 19636177), (19, 11368313), (47, 4595701), (121, 1785107), (209, 1033483), (517, 417791), (893, 241879), (1999, 108053), (2299, 93953), (5687, 37981), (9823, 21989)]