19986960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11897}}^1$

素因数の和:11920

約数の個数: 80

約数和(自身を含む): 70816896

約数和(自身を除く): 50829936

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 11897, 23794, 35691, 47588, 59485, 71382, 83279, 95176, 118970, 142764, 166558, 178455, 190352, 237940, 249837, 285528, 333116, 356910, 416395, 475880, 499674, 571056, 666232, 713820, 832790, 951760, 999348, 1249185, 1332464, 1427640, 1665580, 1998696, 2498370, 2855280, 3331160, 3997392, 4996740, 6662320, 9993480, 19986960]

約数ペア:

[(1, 19986960), (2, 9993480), (3, 6662320), (4, 4996740), (5, 3997392), (6, 3331160), (7, 2855280), (8, 2498370), (10, 1998696), (12, 1665580), (14, 1427640), (15, 1332464), (16, 1249185), (20, 999348), (21, 951760), (24, 832790), (28, 713820), (30, 666232), (35, 571056), (40, 499674), (42, 475880), (48, 416395), (56, 356910), (60, 333116), (70, 285528), (80, 249837), (84, 237940), (105, 190352), (112, 178455), (120, 166558), (140, 142764), (168, 118970), (210, 95176), (240, 83279), (280, 71382), (336, 59485), (420, 47588), (560, 35691), (840, 23794), (1680, 11897)]