28199717

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2843}}^1$

素因数の和:2972

約数の個数: 16

約数和(自身を含む): 35038080

約数和(自身を除く): 6838363

約数列:

[1, 7, 13, 91, 109, 763, 1417, 2843, 9919, 19901, 36959, 258713, 309887, 2169209, 4028531, 28199717]

約数ペア:

[(1, 28199717), (7, 4028531), (13, 2169209), (91, 309887), (109, 258713), (763, 36959), (1417, 19901), (2843, 9919)]