21140205

素因数分解:

$3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3623}}^1$

素因数の和:4020

約数の個数: 16

約数和(自身を含む): 33920640

約数和(自身を除く): 12780435

約数列:

[1, 3, 5, 15, 389, 1167, 1945, 3623, 5835, 10869, 18115, 54345, 1409347, 4228041, 7046735, 21140205]

約数ペア:

[(1, 21140205), (3, 7046735), (5, 4228041), (15, 1409347), (389, 54345), (1167, 18115), (1945, 10869), (3623, 5835)]