21485090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{195319}}^1$

素因数の和:195337

約数の個数: 16

約数和(自身を含む): 42189120

約数和(自身を除く): 20704030

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 195319, 390638, 976595, 1953190, 2148509, 4297018, 10742545, 21485090]

約数ペア:

[(1, 21485090), (2, 10742545), (5, 4297018), (10, 2148509), (11, 1953190), (22, 976595), (55, 390638), (110, 195319)]