21791157

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{5237}}^1$

素因数の和:5332

約数の個数: 16

約数和(自身を含む): 31008960

約数和(自身を除く): 9217803

約数列:

[1, 3, 19, 57, 73, 219, 1387, 4161, 5237, 15711, 99503, 298509, 382301, 1146903, 7263719, 21791157]

約数ペア:

[(1, 21791157), (3, 7263719), (19, 1146903), (57, 382301), (73, 298509), (219, 99503), (1387, 15711), (4161, 5237)]