21118743

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1423}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 32655168

約数和(自身を除く): 11536425

約数列:

[1, 3, 9, 17, 51, 97, 153, 291, 873, 1423, 1649, 4269, 4947, 12807, 14841, 24191, 72573, 138031, 217719, 414093, 1242279, 2346527, 7039581, 21118743]

約数ペア:

[(1, 21118743), (3, 7039581), (9, 2346527), (17, 1242279), (51, 414093), (97, 217719), (153, 138031), (291, 72573), (873, 24191), (1423, 14841), (1649, 12807), (4269, 4947)]