647786881

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{1213}}^1$

素因数の和:1381

約数の個数: 32

約数和(自身を含む): 805552128

約数和(自身を除く): 157765247

約数列:

[1, 7, 23, 31, 107, 161, 217, 713, 749, 1213, 2461, 3317, 4991, 8491, 17227, 23219, 27899, 37603, 76291, 129791, 195293, 263221, 534037, 864869, 908537, 2985193, 4023521, 6054083, 20896351, 28164647, 92540983, 647786881]

約数ペア:

[(1, 647786881), (7, 92540983), (23, 28164647), (31, 20896351), (107, 6054083), (161, 4023521), (217, 2985193), (713, 908537), (749, 864869), (1213, 534037), (2461, 263221), (3317, 195293), (4991, 129791), (8491, 76291), (17227, 37603), (23219, 27899)]