19576921

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 24919944

約数和(自身を除く): 5343023

約数列:

[1, 7, 13, 49, 73, 91, 421, 511, 637, 949, 2947, 3577, 5473, 6643, 20629, 30733, 38311, 46501, 215131, 268177, 399529, 1505917, 2796703, 19576921]

約数ペア:

[(1, 19576921), (7, 2796703), (13, 1505917), (49, 399529), (73, 268177), (91, 215131), (421, 46501), (511, 38311), (637, 30733), (949, 20629), (2947, 6643), (3577, 5473)]