19716950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3259}}^1$

素因数の和:3293

約数の個数: 36

約数和(自身を含む): 40322940

約数和(自身を除く): 20605990

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3259, 6050, 6518, 16295, 32590, 35849, 71698, 81475, 162950, 179245, 358490, 394339, 788678, 896225, 1792450, 1971695, 3943390, 9858475, 19716950]

約数ペア:

[(1, 19716950), (2, 9858475), (5, 3943390), (10, 1971695), (11, 1792450), (22, 896225), (25, 788678), (50, 394339), (55, 358490), (110, 179245), (121, 162950), (242, 81475), (275, 71698), (550, 35849), (605, 32590), (1210, 16295), (3025, 6518), (3259, 6050)]