21648724

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{331}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 38652768

約数和(自身を除く): 17004044

約数列:

[1, 2, 4, 83, 166, 197, 331, 332, 394, 662, 788, 1324, 16351, 27473, 32702, 54946, 65207, 65404, 109892, 130414, 260828, 5412181, 10824362, 21648724]

約数ペア:

[(1, 21648724), (2, 10824362), (4, 5412181), (83, 260828), (166, 130414), (197, 109892), (331, 65404), (332, 65207), (394, 54946), (662, 32702), (788, 27473), (1324, 16351)]