19154780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22273}}^1$

素因数の和:22325

約数の個数: 24

約数和(自身を含む): 41162352

約数和(自身を除く): 22007572

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 22273, 44546, 89092, 111365, 222730, 445460, 957739, 1915478, 3830956, 4788695, 9577390, 19154780]

約数ペア:

[(1, 19154780), (2, 9577390), (4, 4788695), (5, 3830956), (10, 1915478), (20, 957739), (43, 445460), (86, 222730), (172, 111365), (215, 89092), (430, 44546), (860, 22273)]