21104391

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{887}}^1$

素因数の和:1011

約数の個数: 32

約数和(自身を含む): 35463168

約数和(自身を除く): 14358777

約数列:

[1, 3, 7, 11, 21, 33, 77, 103, 231, 309, 721, 887, 1133, 2163, 2661, 3399, 6209, 7931, 9757, 18627, 23793, 29271, 68299, 91361, 204897, 274083, 639527, 1004971, 1918581, 3014913, 7034797, 21104391]

約数ペア:

[(1, 21104391), (3, 7034797), (7, 3014913), (11, 1918581), (21, 1004971), (33, 639527), (77, 274083), (103, 204897), (231, 91361), (309, 68299), (721, 29271), (887, 23793), (1133, 18627), (2163, 9757), (2661, 7931), (3399, 6209)]