21865985

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{1777}}^1$

素因数の和:1912

約数の個数: 16

約数和(自身を含む): 27651456

約数和(自身を除く): 5785471

約数列:

[1, 5, 23, 107, 115, 535, 1777, 2461, 8885, 12305, 40871, 190139, 204355, 950695, 4373197, 21865985]

約数ペア:

[(1, 21865985), (5, 4373197), (23, 950695), (107, 204355), (115, 190139), (535, 40871), (1777, 12305), (2461, 8885)]