16561880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9629}}^1$

素因数の和:9683

約数の個数: 32

約数和(自身を含む): 38134800

約数和(自身を除く): 21572920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 9629, 19258, 38516, 48145, 77032, 96290, 192580, 385160, 414047, 828094, 1656188, 2070235, 3312376, 4140470, 8280940, 16561880]

約数ペア:

[(1, 16561880), (2, 8280940), (4, 4140470), (5, 3312376), (8, 2070235), (10, 1656188), (20, 828094), (40, 414047), (43, 385160), (86, 192580), (172, 96290), (215, 77032), (344, 48145), (430, 38516), (860, 19258), (1720, 9629)]