217242020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{252607}}^1$

素因数の和:252659

約数の個数: 24

約数和(自身を含む): 466819584

約数和(自身を除く): 249577564

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 252607, 505214, 1010428, 1263035, 2526070, 5052140, 10862101, 21724202, 43448404, 54310505, 108621010, 217242020]

約数ペア:

[(1, 217242020), (2, 108621010), (4, 54310505), (5, 43448404), (10, 21724202), (20, 10862101), (43, 5052140), (86, 2526070), (172, 1263035), (215, 1010428), (430, 505214), (860, 252607)]