20999730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1559}}^1$

素因数の和:2018

約数の個数: 32

約数和(自身を含む): 50544000

約数和(自身を除く): 29544270

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 449, 898, 1347, 1559, 2245, 2694, 3118, 4490, 4677, 6735, 7795, 9354, 13470, 15590, 23385, 46770, 699991, 1399982, 2099973, 3499955, 4199946, 6999910, 10499865, 20999730]

約数ペア:

[(1, 20999730), (2, 10499865), (3, 6999910), (5, 4199946), (6, 3499955), (10, 2099973), (15, 1399982), (30, 699991), (449, 46770), (898, 23385), (1347, 15590), (1559, 13470), (2245, 9354), (2694, 7795), (3118, 6735), (4490, 4677)]