21354866

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15497}}^1$

素因数の和:15565

約数の個数: 16

約数和(自身を含む): 35149464

約数和(自身を除く): 13794598

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15497, 30994, 201461, 402922, 821341, 1642682, 10677433, 21354866]

約数ペア:

[(1, 21354866), (2, 10677433), (13, 1642682), (26, 821341), (53, 402922), (106, 201461), (689, 30994), (1378, 15497)]