18777621

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{907}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 25685504

約数和(自身を除く): 6907883

約数列:

[1, 3, 67, 103, 201, 309, 907, 2721, 6901, 20703, 60769, 93421, 182307, 280263, 6259207, 18777621]

約数ペア:

[(1, 18777621), (3, 6259207), (67, 280263), (103, 182307), (201, 93421), (309, 60769), (907, 20703), (2721, 6901)]