21115941

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91411}}^1$

素因数の和:91432

約数の個数: 16

約数和(自身を含む): 35102208

約数和(自身を除く): 13986267

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91411, 274233, 639877, 1005521, 1919631, 3016563, 7038647, 21115941]

約数ペア:

[(1, 21115941), (3, 7038647), (7, 3016563), (11, 1919631), (21, 1005521), (33, 639877), (77, 274233), (231, 91411)]