644709

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:348

約数の個数: 16

約数和(自身を含む): 944384

約数和(自身を除く): 299675

約数列:

[1, 3, 13, 39, 61, 183, 271, 793, 813, 2379, 3523, 10569, 16531, 49593, 214903, 644709]

約数ペア:

[(1, 644709), (3, 214903), (13, 49593), (39, 16531), (61, 10569), (183, 3523), (271, 2379), (793, 813)]