21857776

素因数分解:

$2^4\times {\mathrm{71}}^2\times {\mathrm{271}}^1$

素因数の和:421

約数の個数: 30

約数和(自身を含む): 43112816

約数和(自身を除く): 21255040

約数列:

[1, 2, 4, 8, 16, 71, 142, 271, 284, 542, 568, 1084, 1136, 2168, 4336, 5041, 10082, 19241, 20164, 38482, 40328, 76964, 80656, 153928, 307856, 1366111, 2732222, 5464444, 10928888, 21857776]

約数ペア:

[(1, 21857776), (2, 10928888), (4, 5464444), (8, 2732222), (16, 1366111), (71, 307856), (142, 153928), (271, 80656), (284, 76964), (542, 40328), (568, 38482), (1084, 20164), (1136, 19241), (2168, 10082), (4336, 5041)]