289301420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{336397}}^1$

素因数の和:336449

約数の個数: 24

約数和(自身を含む): 621663504

約数和(自身を除く): 332362084

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 336397, 672794, 1345588, 1681985, 3363970, 6727940, 14465071, 28930142, 57860284, 72325355, 144650710, 289301420]

約数ペア:

[(1, 289301420), (2, 144650710), (4, 72325355), (5, 57860284), (10, 28930142), (20, 14465071), (43, 6727940), (86, 3363970), (172, 1681985), (215, 1345588), (430, 672794), (860, 336397)]