21735981

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1609}}^1$

素因数の和:1713

約数の個数: 24

約数和(自身を含む): 33488000

約数和(自身を除く): 11752019

約数列:

[1, 3, 9, 19, 57, 79, 171, 237, 711, 1501, 1609, 4503, 4827, 13509, 14481, 30571, 91713, 127111, 275139, 381333, 1143999, 2415109, 7245327, 21735981]

約数ペア:

[(1, 21735981), (3, 7245327), (9, 2415109), (19, 1143999), (57, 381333), (79, 275139), (171, 127111), (237, 91713), (711, 30571), (1501, 14481), (1609, 13509), (4503, 4827)]