21186116

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10657}}^1$

素因数の和:10739

約数の個数: 24

約数和(自身を含む): 42973056

約数和(自身を除く): 21786940

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10657, 21314, 42628, 74599, 149198, 298396, 756647, 1513294, 3026588, 5296529, 10593058, 21186116]

約数ペア:

[(1, 21186116), (2, 10593058), (4, 5296529), (7, 3026588), (14, 1513294), (28, 756647), (71, 298396), (142, 149198), (284, 74599), (497, 42628), (994, 21314), (1988, 10657)]