21311897

素因数分解:

${\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 23587200

約数和(自身を除く): 2275303

約数列:

[1, 17, 29, 139, 311, 493, 2363, 4031, 5287, 9019, 43229, 68527, 153323, 734893, 1253641, 21311897]

約数ペア:

[(1, 21311897), (17, 1253641), (29, 734893), (139, 153323), (311, 68527), (493, 43229), (2363, 9019), (4031, 5287)]