21386948

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{5011}}^1$

素因数の和:5123

約数の個数: 24

約数和(自身を含む): 41258784

約数和(自身を除く): 19871836

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2134, 4268, 5011, 10022, 20044, 55121, 110242, 220484, 486067, 972134, 1944268, 5346737, 10693474, 21386948]

約数ペア:

[(1, 21386948), (2, 10693474), (4, 5346737), (11, 1944268), (22, 972134), (44, 486067), (97, 220484), (194, 110242), (388, 55121), (1067, 20044), (2134, 10022), (4268, 5011)]