788970020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{917407}}^1$

素因数の和:917459

約数の個数: 24

約数和(自身を含む): 1695369984

約数和(自身を除く): 906399964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 917407, 1834814, 3669628, 4587035, 9174070, 18348140, 39448501, 78897002, 157794004, 197242505, 394485010, 788970020]

約数ペア:

[(1, 788970020), (2, 394485010), (4, 197242505), (5, 157794004), (10, 78897002), (20, 39448501), (43, 18348140), (86, 9174070), (172, 4587035), (215, 3669628), (430, 1834814), (860, 917407)]