21171975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2333}}^1$

素因数の和:2368

約数の個数: 36

約数和(自身を含む): 38492328

約数和(自身を除く): 17320353

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2333, 3025, 6999, 9075, 11665, 25663, 34995, 58325, 76989, 128315, 174975, 282293, 384945, 641575, 846879, 1411465, 1924725, 4234395, 7057325, 21171975]

約数ペア:

[(1, 21171975), (3, 7057325), (5, 4234395), (11, 1924725), (15, 1411465), (25, 846879), (33, 641575), (55, 384945), (75, 282293), (121, 174975), (165, 128315), (275, 76989), (363, 58325), (605, 34995), (825, 25663), (1815, 11665), (2333, 9075), (3025, 6999)]