18938689

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3671}}^1$

素因数の和:3756

約数の個数: 16

約数和(自身を含む): 23970816

約数和(自身を除く): 5032127

約数列:

[1, 7, 11, 67, 77, 469, 737, 3671, 5159, 25697, 40381, 245957, 282667, 1721699, 2705527, 18938689]

約数ペア:

[(1, 18938689), (7, 2705527), (11, 1721699), (67, 282667), (77, 245957), (469, 40381), (737, 25697), (3671, 5159)]