856660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 2136960

約数和(自身を除く): 1280300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 211, 290, 406, 422, 580, 812, 844, 1015, 1055, 1477, 2030, 2110, 2954, 4060, 4220, 5908, 6119, 7385, 12238, 14770, 24476, 29540, 30595, 42833, 61190, 85666, 122380, 171332, 214165, 428330, 856660]

約数ペア:

[(1, 856660), (2, 428330), (4, 214165), (5, 171332), (7, 122380), (10, 85666), (14, 61190), (20, 42833), (28, 30595), (29, 29540), (35, 24476), (58, 14770), (70, 12238), (116, 7385), (140, 6119), (145, 5908), (203, 4220), (211, 4060), (290, 2954), (406, 2110), (422, 2030), (580, 1477), (812, 1055), (844, 1015)]