21493516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{877}}^1$

素因数の和:1449

約数の個数: 24

約数和(自身を含む): 41153616

約数和(自身を除く): 19660100

約数列:

[1, 2, 4, 11, 22, 44, 557, 877, 1114, 1754, 2228, 3508, 6127, 9647, 12254, 19294, 24508, 38588, 488489, 976978, 1953956, 5373379, 10746758, 21493516]

約数ペア:

[(1, 21493516), (2, 10746758), (4, 5373379), (11, 1953956), (22, 976978), (44, 488489), (557, 38588), (877, 24508), (1114, 19294), (1754, 12254), (2228, 9647), (3508, 6127)]