21978698

素因数分解:

$2^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{4373}}^1$

素因数の和:4741

約数の個数: 16

約数和(自身を含む): 37791360

約数和(自身を除く): 15812662

約数列:

[1, 2, 7, 14, 359, 718, 2513, 4373, 5026, 8746, 30611, 61222, 1569907, 3139814, 10989349, 21978698]

約数ペア:

[(1, 21978698), (2, 10989349), (7, 3139814), (14, 1569907), (359, 61222), (718, 30611), (2513, 8746), (4373, 5026)]