21303668

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{317}}^2$

素因数の和:691

約数の個数: 18

約数和(自身を含む): 38105046

約数和(自身を除く): 16801378

約数列:

[1, 2, 4, 53, 106, 212, 317, 634, 1268, 16801, 33602, 67204, 100489, 200978, 401956, 5325917, 10651834, 21303668]

約数ペア:

[(1, 21303668), (2, 10651834), (4, 5325917), (53, 401956), (106, 200978), (212, 100489), (317, 67204), (634, 33602), (1268, 16801)]