20438001

素因数分解:

$3^5\times {\mathrm{151}}^1\times {\mathrm{557}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 30873024

約数和(自身を除く): 10435023

約数列:

[1, 3, 9, 27, 81, 151, 243, 453, 557, 1359, 1671, 4077, 5013, 12231, 15039, 36693, 45117, 84107, 135351, 252321, 756963, 2270889, 6812667, 20438001]

約数ペア:

[(1, 20438001), (3, 6812667), (9, 2270889), (27, 756963), (81, 252321), (151, 135351), (243, 84107), (453, 45117), (557, 36693), (1359, 15039), (1671, 12231), (4077, 5013)]