20393380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5023}}^1$

素因数の和:5068

約数の個数: 48

約数和(自身を含む): 50641920

約数和(自身を除く): 30248540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5023, 10046, 20092, 25115, 35161, 50230, 70322, 100460, 140644, 145667, 175805, 291334, 351610, 582668, 703220, 728335, 1019669, 1456670, 2039338, 2913340, 4078676, 5098345, 10196690, 20393380]

約数ペア:

[(1, 20393380), (2, 10196690), (4, 5098345), (5, 4078676), (7, 2913340), (10, 2039338), (14, 1456670), (20, 1019669), (28, 728335), (29, 703220), (35, 582668), (58, 351610), (70, 291334), (116, 175805), (140, 145667), (145, 140644), (203, 100460), (290, 70322), (406, 50230), (580, 35161), (812, 25115), (1015, 20092), (2030, 10046), (4060, 5023)]