21063951

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{619}}^1$

素因数の和:843

約数の個数: 24

約数和(自身を含む): 32240000

約数和(自身を除く): 11176049

約数列:

[1, 3, 9, 19, 57, 171, 199, 597, 619, 1791, 1857, 3781, 5571, 11343, 11761, 34029, 35283, 105849, 123181, 369543, 1108629, 2340439, 7021317, 21063951]

約数ペア:

[(1, 21063951), (3, 7021317), (9, 2340439), (19, 1108629), (57, 369543), (171, 123181), (199, 105849), (597, 35283), (619, 34029), (1791, 11761), (1857, 11343), (3781, 5571)]