21782219

素因数分解:

${\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 25198560

約数和(自身を除く): 3416341

約数列:

[1, 17, 23, 29, 113, 289, 391, 493, 667, 1921, 2599, 3277, 6647, 8381, 11339, 32657, 44183, 55709, 75371, 192763, 751111, 947053, 1281307, 21782219]

約数ペア:

[(1, 21782219), (17, 1281307), (23, 947053), (29, 751111), (113, 192763), (289, 75371), (391, 55709), (493, 44183), (667, 32657), (1921, 11339), (2599, 8381), (3277, 6647)]