19970195

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2203}}^1$

素因数の和:2259

約数の個数: 24

約数和(自身を含む): 28643184

約数和(自身を除く): 8672989

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 2203, 9065, 11015, 15421, 77105, 81511, 107947, 407555, 539735, 570577, 2852885, 3994039, 19970195]

約数ペア:

[(1, 19970195), (5, 3994039), (7, 2852885), (35, 570577), (37, 539735), (49, 407555), (185, 107947), (245, 81511), (259, 77105), (1295, 15421), (1813, 11015), (2203, 9065)]