20186905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{4481}}^1$

素因数の和:4556

約数の個数: 16

約数和(自身を含む): 26139024

約数和(自身を除く): 5952119

約数列:

[1, 5, 17, 53, 85, 265, 901, 4481, 4505, 22405, 76177, 237493, 380885, 1187465, 4037381, 20186905]

約数ペア:

[(1, 20186905), (5, 4037381), (17, 1187465), (53, 380885), (85, 237493), (265, 76177), (901, 22405), (4481, 4505)]