21994287

素因数分解:

$3^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{953}}^1$

素因数の和:1127

約数の個数: 24

約数和(自身を含む): 34366896

約数和(自身を除く): 12372609

約数列:

[1, 3, 7, 21, 49, 147, 157, 471, 953, 1099, 2859, 3297, 6671, 7693, 20013, 23079, 46697, 140091, 149621, 448863, 1047347, 3142041, 7331429, 21994287]

約数ペア:

[(1, 21994287), (3, 7331429), (7, 3142041), (21, 1047347), (49, 448863), (147, 149621), (157, 140091), (471, 46697), (953, 23079), (1099, 20013), (2859, 7693), (3297, 6671)]