21438010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194891}}^1$

素因数の和:194909

約数の個数: 16

約数和(自身を含む): 42096672

約数和(自身を除く): 20658662

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194891, 389782, 974455, 1948910, 2143801, 4287602, 10719005, 21438010]

約数ペア:

[(1, 21438010), (2, 10719005), (5, 4287602), (10, 2143801), (11, 1948910), (22, 974455), (55, 389782), (110, 194891)]