21684605

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{463}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 30067200

約数和(自身を除く): 8382595

約数列:

[1, 5, 17, 19, 29, 85, 95, 145, 323, 463, 493, 551, 1615, 2315, 2465, 2755, 7871, 8797, 9367, 13427, 39355, 43985, 46835, 67135, 149549, 228259, 255113, 747745, 1141295, 1275565, 4336921, 21684605]

約数ペア:

[(1, 21684605), (5, 4336921), (17, 1275565), (19, 1141295), (29, 747745), (85, 255113), (95, 228259), (145, 149549), (323, 67135), (463, 46835), (493, 43985), (551, 39355), (1615, 13427), (2315, 9367), (2465, 8797), (2755, 7871)]