315440

素因数分解:

$2^4\times 5^1\times {\mathrm{3943}}^1$

素因数の和:3956

約数の個数: 20

約数和(自身を含む): 733584

約数和(自身を除く): 418144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3943, 7886, 15772, 19715, 31544, 39430, 63088, 78860, 157720, 315440]

約数ペア:

[(1, 315440), (2, 157720), (4, 78860), (5, 63088), (8, 39430), (10, 31544), (16, 19715), (20, 15772), (40, 7886), (80, 3943)]