21476907

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:305

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 12674133

約数列:

[1, 3, 9, 27, 29, 41, 81, 87, 123, 223, 261, 369, 669, 783, 1107, 1189, 2007, 2349, 3321, 3567, 6021, 6467, 9143, 10701, 18063, 19401, 27429, 32103, 58203, 82287, 96309, 174609, 246861, 265147, 523827, 740583, 795441, 2386323, 7158969, 21476907]

約数ペア:

[(1, 21476907), (3, 7158969), (9, 2386323), (27, 795441), (29, 740583), (41, 523827), (81, 265147), (87, 246861), (123, 174609), (223, 96309), (261, 82287), (369, 58203), (669, 32103), (783, 27429), (1107, 19401), (1189, 18063), (2007, 10701), (2349, 9143), (3321, 6467), (3567, 6021)]