21653716

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{45491}}^1$

素因数の和:45519

約数の個数: 24

約数和(自身を含む): 45855936

約数和(自身を除く): 24202220

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476, 45491, 90982, 181964, 318437, 636874, 773347, 1273748, 1546694, 3093388, 5413429, 10826858, 21653716]

約数ペア:

[(1, 21653716), (2, 10826858), (4, 5413429), (7, 3093388), (14, 1546694), (17, 1273748), (28, 773347), (34, 636874), (68, 318437), (119, 181964), (238, 90982), (476, 45491)]