21537887

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{2417}}^1$

素因数の和:2510

約数の個数: 16

約数和(自身を含む): 26307840

約数和(自身を除く): 4769953

約数列:

[1, 7, 19, 67, 133, 469, 1273, 2417, 8911, 16919, 45923, 161939, 321461, 1133573, 3076841, 21537887]

約数ペア:

[(1, 21537887), (7, 3076841), (19, 1133573), (67, 321461), (133, 161939), (469, 45923), (1273, 16919), (2417, 8911)]