16787781

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 25328160

約数和(自身を除く): 8540379

約数列:

[1, 3, 9, 29, 87, 131, 261, 393, 491, 1179, 1473, 3799, 4419, 11397, 14239, 34191, 42717, 64321, 128151, 192963, 578889, 1865309, 5595927, 16787781]

約数ペア:

[(1, 16787781), (3, 5595927), (9, 1865309), (29, 578889), (87, 192963), (131, 128151), (261, 64321), (393, 42717), (491, 34191), (1179, 14239), (1473, 11397), (3799, 4419)]