1999138220

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{196379}}^1$

素因数の和:196897

約数の個数: 24

約数和(自身を含む): 4206459600

約数和(自身を除く): 2207321380

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 196379, 392758, 785516, 981895, 1963790, 3927580, 99956911, 199913822, 399827644, 499784555, 999569110, 1999138220]

約数ペア:

[(1, 1999138220), (2, 999569110), (4, 499784555), (5, 399827644), (10, 199913822), (20, 99956911), (509, 3927580), (1018, 1963790), (2036, 981895), (2545, 785516), (5090, 392758), (10180, 196379)]