667984

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{503}}^1$

素因数の和:594

約数の個数: 20

約数和(自身を含む): 1312416

約数和(自身を除く): 644432

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 503, 664, 1006, 1328, 2012, 4024, 8048, 41749, 83498, 166996, 333992, 667984]

約数ペア:

[(1, 667984), (2, 333992), (4, 166996), (8, 83498), (16, 41749), (83, 8048), (166, 4024), (332, 2012), (503, 1328), (664, 1006)]