21769990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197909}}^1$

素因数の和:197927

約数の個数: 16

約数和(自身を含む): 42748560

約数和(自身を除く): 20978570

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197909, 395818, 989545, 1979090, 2176999, 4353998, 10884995, 21769990]

約数ペア:

[(1, 21769990), (2, 10884995), (5, 4353998), (10, 2176999), (11, 1979090), (22, 989545), (55, 395818), (110, 197909)]