18293219

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:448

約数の個数: 20

約数和(自身を含む): 22520040

約数和(自身を除く): 4226821

約数列:

[1, 7, 19, 49, 133, 343, 401, 931, 2401, 2807, 6517, 7619, 19649, 45619, 53333, 137543, 373331, 962801, 2613317, 18293219]

約数ペア:

[(1, 18293219), (7, 2613317), (19, 962801), (49, 373331), (133, 137543), (343, 53333), (401, 45619), (931, 19649), (2401, 7619), (2807, 6517)]