21118887

素因数分解:

$3^5\times {\mathrm{233}}^1\times {\mathrm{373}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 31855824

約数和(自身を除く): 10736937

約数列:

[1, 3, 9, 27, 81, 233, 243, 373, 699, 1119, 2097, 3357, 6291, 10071, 18873, 30213, 56619, 86909, 90639, 260727, 782181, 2346543, 7039629, 21118887]

約数ペア:

[(1, 21118887), (3, 7039629), (9, 2346543), (27, 782181), (81, 260727), (233, 90639), (243, 86909), (373, 56619), (699, 30213), (1119, 18873), (2097, 10071), (3357, 6291)]