18138533

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:572

約数の個数: 16

約数和(自身を含む): 21320064

約数和(自身を除く): 3181531

約数列:

[1, 7, 61, 107, 397, 427, 749, 2779, 6527, 24217, 42479, 45689, 169519, 297353, 2591219, 18138533]

約数ペア:

[(1, 18138533), (7, 2591219), (61, 297353), (107, 169519), (397, 45689), (427, 42479), (749, 24217), (2779, 6527)]