199821890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{689041}}^1$

素因数の和:689077

約数の個数: 16

約数和(自身を含む): 372082680

約数和(自身を除く): 172260790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 689041, 1378082, 3445205, 6890410, 19982189, 39964378, 99910945, 199821890]

約数ペア:

[(1, 199821890), (2, 99910945), (5, 39964378), (10, 19982189), (29, 6890410), (58, 3445205), (145, 1378082), (290, 689041)]