21430090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194819}}^1$

素因数の和:194837

約数の個数: 16

約数和(自身を含む): 42081120

約数和(自身を除く): 20651030

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194819, 389638, 974095, 1948190, 2143009, 4286018, 10715045, 21430090]

約数ペア:

[(1, 21430090), (2, 10715045), (5, 4286018), (10, 2143009), (11, 1948190), (22, 974095), (55, 389638), (110, 194819)]