12940160

素因数分解:

$2^7\times 5^1\times {\mathrm{20219}}^1$

素因数の和:20238

約数の個数: 32

約数和(自身を含む): 30936600

約数和(自身を除く): 17996440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20219, 40438, 80876, 101095, 161752, 202190, 323504, 404380, 647008, 808760, 1294016, 1617520, 2588032, 3235040, 6470080, 12940160]

約数ペア:

[(1, 12940160), (2, 6470080), (4, 3235040), (5, 2588032), (8, 1617520), (10, 1294016), (16, 808760), (20, 647008), (32, 404380), (40, 323504), (64, 202190), (80, 161752), (128, 101095), (160, 80876), (320, 40438), (640, 20219)]