639249

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 944832

約数和(自身を除く): 305583

約数列:

[1, 3, 13, 37, 39, 111, 443, 481, 1329, 1443, 5759, 16391, 17277, 49173, 213083, 639249]

約数ペア:

[(1, 639249), (3, 213083), (13, 49173), (37, 17277), (39, 16391), (111, 5759), (443, 1443), (481, 1329)]