21919251

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1\times {\mathrm{653}}^1$

素因数の和:890

約数の個数: 16

約数和(自身を含む): 29885184

約数和(自身を除く): 7965933

約数列:

[1, 3, 67, 167, 201, 501, 653, 1959, 11189, 33567, 43751, 109051, 131253, 327153, 7306417, 21919251]

約数ペア:

[(1, 21919251), (3, 7306417), (67, 327153), (167, 131253), (201, 109051), (501, 43751), (653, 33567), (1959, 11189)]