399778883

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{887}}^1$

素因数の和:1023

約数の個数: 24

約数和(自身を含む): 479690496

約数和(自身を除く): 79911613

約数列:

[1, 7, 31, 67, 217, 469, 887, 961, 2077, 6209, 6727, 14539, 27497, 59429, 64387, 192479, 416003, 450709, 852407, 1842299, 5966849, 12896093, 57111269, 399778883]

約数ペア:

[(1, 399778883), (7, 57111269), (31, 12896093), (67, 5966849), (217, 1842299), (469, 852407), (887, 450709), (961, 416003), (2077, 192479), (6209, 64387), (6727, 59429), (14539, 27497)]