339440

素因数分解:

$2^4\times 5^1\times {\mathrm{4243}}^1$

素因数の和:4256

約数の個数: 20

約数和(自身を含む): 789384

約数和(自身を除く): 449944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4243, 8486, 16972, 21215, 33944, 42430, 67888, 84860, 169720, 339440]

約数ペア:

[(1, 339440), (2, 169720), (4, 84860), (5, 67888), (8, 42430), (10, 33944), (16, 21215), (20, 16972), (40, 8486), (80, 4243)]