18885139

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1339

約数の個数: 24

約数和(自身を含む): 24706080

約数和(自身を除く): 5820941

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1289, 2093, 9023, 14651, 16757, 29647, 63161, 117299, 207529, 385411, 821093, 1452703, 2697877, 18885139]

約数ペア:

[(1, 18885139), (7, 2697877), (13, 1452703), (23, 821093), (49, 385411), (91, 207529), (161, 117299), (299, 63161), (637, 29647), (1127, 16757), (1289, 14651), (2093, 9023)]