19789857

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{887}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 29829696

約数和(自身を除く): 10039839

約数列:

[1, 3, 9, 37, 67, 111, 201, 333, 603, 887, 2479, 2661, 7437, 7983, 22311, 32819, 59429, 98457, 178287, 295371, 534861, 2198873, 6596619, 19789857]

約数ペア:

[(1, 19789857), (3, 6596619), (9, 2198873), (37, 534861), (67, 295371), (111, 178287), (201, 98457), (333, 59429), (603, 32819), (887, 22311), (2479, 7983), (2661, 7437)]