28668171

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{613}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 46683648

約数和(自身を除く): 18015477

約数列:

[1, 3, 7, 17, 21, 51, 119, 131, 357, 393, 613, 917, 1839, 2227, 2751, 4291, 6681, 10421, 12873, 15589, 31263, 46767, 72947, 80303, 218841, 240909, 562121, 1365151, 1686363, 4095453, 9556057, 28668171]

約数ペア:

[(1, 28668171), (3, 9556057), (7, 4095453), (17, 1686363), (21, 1365151), (51, 562121), (119, 240909), (131, 218841), (357, 80303), (393, 72947), (613, 46767), (917, 31263), (1839, 15589), (2227, 12873), (2751, 10421), (4291, 6681)]