289891880

素因数分解:

$2^3\times 5^1\times {\mathrm{7247297}}^1$

素因数の和:7247308

約数の個数: 16

約数和(自身を含む): 652256820

約数和(自身を除く): 362364940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7247297, 14494594, 28989188, 36236485, 57978376, 72472970, 144945940, 289891880]

約数ペア:

[(1, 289891880), (2, 144945940), (4, 72472970), (5, 57978376), (8, 36236485), (10, 28989188), (20, 14494594), (40, 7247297)]