217377489

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{75557}}^1$

素因数の和:75704

約数の個数: 16

約数和(自身を含む): 333664128

約数和(自身を除く): 116286639

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 75557, 226671, 528899, 1586697, 10351309, 31053927, 72459163, 217377489]

約数ペア:

[(1, 217377489), (3, 72459163), (7, 31053927), (21, 10351309), (137, 1586697), (411, 528899), (959, 226671), (2877, 75557)]