19800155

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{3191}}^1$

素因数の和:3286

約数の個数: 16

約数和(自身を含む): 25510464

約数和(自身を除く): 5710309

約数列:

[1, 5, 17, 73, 85, 365, 1241, 3191, 6205, 15955, 54247, 232943, 271235, 1164715, 3960031, 19800155]

約数ペア:

[(1, 19800155), (5, 3960031), (17, 1164715), (73, 271235), (85, 232943), (365, 54247), (1241, 15955), (3191, 6205)]