21917241

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1913}}^1$

素因数の和:2005

約数の個数: 24

約数和(自身を含む): 33839520

約数和(自身を除く): 11922279

約数列:

[1, 3, 9, 19, 57, 67, 171, 201, 603, 1273, 1913, 3819, 5739, 11457, 17217, 36347, 109041, 128171, 327123, 384513, 1153539, 2435249, 7305747, 21917241]

約数ペア:

[(1, 21917241), (3, 7305747), (9, 2435249), (19, 1153539), (57, 384513), (67, 327123), (171, 128171), (201, 109041), (603, 36347), (1273, 17217), (1913, 11457), (3819, 5739)]