21236138

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1889}}^1$

素因数の和:1982

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19043542

約数列:

[1, 2, 7, 11, 14, 22, 73, 77, 146, 154, 511, 803, 1022, 1606, 1889, 3778, 5621, 11242, 13223, 20779, 26446, 41558, 137897, 145453, 275794, 290906, 965279, 1516867, 1930558, 3033734, 10618069, 21236138]

約数ペア:

[(1, 21236138), (2, 10618069), (7, 3033734), (11, 1930558), (14, 1516867), (22, 965279), (73, 290906), (77, 275794), (146, 145453), (154, 137897), (511, 41558), (803, 26446), (1022, 20779), (1606, 13223), (1889, 11242), (3778, 5621)]