21388395005

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1117763}}^1$

素因数の和:1117900

約数の個数: 16

約数和(自身を含む): 26558072640

約数和(自身を除く): 5169677635

約数列:

[1, 5, 43, 89, 215, 445, 3827, 19135, 1117763, 5588815, 48063809, 99480907, 240319045, 497404535, 4277679001, 21388395005]

約数ペア:

[(1, 21388395005), (5, 4277679001), (43, 497404535), (89, 240319045), (215, 99480907), (445, 48063809), (3827, 5588815), (19135, 1117763)]