21776810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197971}}^1$

素因数の和:197989

約数の個数: 16

約数和(自身を含む): 42761952

約数和(自身を除く): 20985142

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197971, 395942, 989855, 1979710, 2177681, 4355362, 10888405, 21776810]

約数ペア:

[(1, 21776810), (2, 10888405), (5, 4355362), (10, 2177681), (11, 1979710), (22, 989855), (55, 395942), (110, 197971)]