21204185

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{797}}^1$

素因数の和:1132

約数の個数: 16

約数和(自身を含む): 27061776

約数和(自身を除く): 5857591

約数列:

[1, 5, 17, 85, 313, 797, 1565, 3985, 5321, 13549, 26605, 67745, 249461, 1247305, 4240837, 21204185]

約数ペア:

[(1, 21204185), (5, 4240837), (17, 1247305), (85, 249461), (313, 67745), (797, 26605), (1565, 13549), (3985, 5321)]