199957720

素因数分解:

$2^3\times 5^1\times {\mathrm{4998943}}^1$

素因数の和:4998954

約数の個数: 16

約数和(自身を含む): 449904960

約数和(自身を除く): 249947240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4998943, 9997886, 19995772, 24994715, 39991544, 49989430, 99978860, 199957720]

約数ペア:

[(1, 199957720), (2, 99978860), (4, 49989430), (5, 39991544), (8, 24994715), (10, 19995772), (20, 9997886), (40, 4998943)]