21868165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4099}}^1$

素因数の和:4212

約数の個数: 16

約数和(自身を含む): 28929600

約数和(自身を除く): 7061435

約数列:

[1, 5, 11, 55, 97, 485, 1067, 4099, 5335, 20495, 45089, 225445, 397603, 1988015, 4373633, 21868165]

約数ペア:

[(1, 21868165), (5, 4373633), (11, 1988015), (55, 397603), (97, 225445), (485, 45089), (1067, 20495), (4099, 5335)]