21338560

素因数分解:

$2^6\times 5^1\times {\mathrm{66683}}^1$

素因数の和:66700

約数の個数: 28

約数和(自身を含む): 50813208

約数和(自身を除く): 29474648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66683, 133366, 266732, 333415, 533464, 666830, 1066928, 1333660, 2133856, 2667320, 4267712, 5334640, 10669280, 21338560]

約数ペア:

[(1, 21338560), (2, 10669280), (4, 5334640), (5, 4267712), (8, 2667320), (10, 2133856), (16, 1333660), (20, 1066928), (32, 666830), (40, 533464), (64, 333415), (80, 266732), (160, 133366), (320, 66683)]