21911965

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1\times {\mathrm{433}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 27342000

約数和(自身を除く): 5430035

約数列:

[1, 5, 29, 145, 349, 433, 1745, 2165, 10121, 12557, 50605, 62785, 151117, 755585, 4382393, 21911965]

約数ペア:

[(1, 21911965), (5, 4382393), (29, 755585), (145, 151117), (349, 62785), (433, 50605), (1745, 12557), (2165, 10121)]