17720833

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 20659968

約数和(自身を除く): 2939135

約数列:

[1, 13, 23, 47, 97, 169, 299, 611, 1081, 1261, 2231, 3887, 4559, 7943, 14053, 16393, 29003, 59267, 104857, 182689, 377039, 770471, 1363141, 17720833]

約数ペア:

[(1, 17720833), (13, 1363141), (23, 770471), (47, 377039), (97, 182689), (169, 104857), (299, 59267), (611, 29003), (1081, 16393), (1261, 14053), (2231, 7943), (3887, 4559)]