21041397

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{397}}^1$

素因数の和:570

約数の個数: 32

約数和(自身を含む): 33877760

約数和(自身を除く): 12836363

約数列:

[1, 3, 9, 13, 27, 39, 117, 151, 351, 397, 453, 1191, 1359, 1963, 3573, 4077, 5161, 5889, 10719, 15483, 17667, 46449, 53001, 59947, 139347, 179841, 539523, 779311, 1618569, 2337933, 7013799, 21041397]

約数ペア:

[(1, 21041397), (3, 7013799), (9, 2337933), (13, 1618569), (27, 779311), (39, 539523), (117, 179841), (151, 139347), (351, 59947), (397, 53001), (453, 46449), (1191, 17667), (1359, 15483), (1963, 10719), (3573, 5889), (4077, 5161)]