21000340880

素因数分解:

$2^4\times 5^1\times {\mathrm{262504261}}^1$

素因数の和:262504274

約数の個数: 20

約数和(自身を含む): 48825792732

約数和(自身を除く): 27825451852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262504261, 525008522, 1050017044, 1312521305, 2100034088, 2625042610, 4200068176, 5250085220, 10500170440, 21000340880]

約数ペア:

[(1, 21000340880), (2, 10500170440), (4, 5250085220), (5, 4200068176), (8, 2625042610), (10, 2100034088), (16, 1312521305), (20, 1050017044), (40, 525008522), (80, 262504261)]