687939

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:115

約数の個数: 32

約数和(自身を含む): 1161216

約数和(自身を除く): 473277

約数列:

[1, 3, 7, 17, 21, 41, 47, 51, 119, 123, 141, 287, 329, 357, 697, 799, 861, 987, 1927, 2091, 2397, 4879, 5593, 5781, 13489, 14637, 16779, 32759, 40467, 98277, 229313, 687939]

約数ペア:

[(1, 687939), (3, 229313), (7, 98277), (17, 40467), (21, 32759), (41, 16779), (47, 14637), (51, 13489), (119, 5781), (123, 5593), (141, 4879), (287, 2397), (329, 2091), (357, 1927), (697, 987), (799, 861)]