20701940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5099}}^1$

素因数の和:5144

約数の個数: 48

約数和(自身を含む): 51408000

約数和(自身を除く): 30706060

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, 5099, 10198, 20396, 25495, 35693, 50990, 71386, 101980, 142772, 147871, 178465, 295742, 356930, 591484, 713860, 739355, 1035097, 1478710, 2070194, 2957420, 4140388, 5175485, 10350970, 20701940]

約数ペア:

[(1, 20701940), (2, 10350970), (4, 5175485), (5, 4140388), (7, 2957420), (10, 2070194), (14, 1478710), (20, 1035097), (28, 739355), (29, 713860), (35, 591484), (58, 356930), (70, 295742), (116, 178465), (140, 147871), (145, 142772), (203, 101980), (290, 71386), (406, 50990), (580, 35693), (812, 25495), (1015, 20396), (2030, 10198), (4060, 5099)]