20669990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{187909}}^1$

素因数の和:187927

約数の個数: 16

約数和(自身を含む): 40588560

約数和(自身を除く): 19918570

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 187909, 375818, 939545, 1879090, 2066999, 4133998, 10334995, 20669990]

約数ペア:

[(1, 20669990), (2, 10334995), (5, 4133998), (10, 2066999), (11, 1879090), (22, 939545), (55, 375818), (110, 187909)]