21000608660

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{859}}^1\times {\mathrm{1907}}^1$

素因数の和:3416

約数の個数: 48

約数和(自身を含む): 44244688320

約数和(自身を除く): 23244079660

約数列:

[1, 2, 4, 5, 10, 20, 641, 859, 1282, 1718, 1907, 2564, 3205, 3436, 3814, 4295, 6410, 7628, 8590, 9535, 12820, 17180, 19070, 38140, 550619, 1101238, 1222387, 1638113, 2202476, 2444774, 2753095, 3276226, 4889548, 5506190, 6111935, 6552452, 8190565, 11012380, 12223870, 16381130, 24447740, 32762260, 1050030433, 2100060866, 4200121732, 5250152165, 10500304330, 21000608660]

約数ペア:

[(1, 21000608660), (2, 10500304330), (4, 5250152165), (5, 4200121732), (10, 2100060866), (20, 1050030433), (641, 32762260), (859, 24447740), (1282, 16381130), (1718, 12223870), (1907, 11012380), (2564, 8190565), (3205, 6552452), (3436, 6111935), (3814, 5506190), (4295, 4889548), (6410, 3276226), (7628, 2753095), (8590, 2444774), (9535, 2202476), (12820, 1638113), (17180, 1222387), (19070, 1101238), (38140, 550619)]