21868780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13841}}^1$

素因数の和:13929

約数の個数: 24

約数和(自身を含む): 46509120

約数和(自身を除く): 24640340

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13841, 27682, 55364, 69205, 138410, 276820, 1093439, 2186878, 4373756, 5467195, 10934390, 21868780]

約数ペア:

[(1, 21868780), (2, 10934390), (4, 5467195), (5, 4373756), (10, 2186878), (20, 1093439), (79, 276820), (158, 138410), (316, 69205), (395, 55364), (790, 27682), (1580, 13841)]