21337556

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 38263176

約数和(自身を除く): 16925620

約数列:

[1, 2, 4, 61, 122, 157, 244, 314, 557, 628, 1114, 2228, 9577, 19154, 33977, 38308, 67954, 87449, 135908, 174898, 349796, 5334389, 10668778, 21337556]

約数ペア:

[(1, 21337556), (2, 10668778), (4, 5334389), (61, 349796), (122, 174898), (157, 135908), (244, 87449), (314, 67954), (557, 38308), (628, 33977), (1114, 19154), (2228, 9577)]