21491900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{7411}}^1$

素因数の和:7454

約数の個数: 36

約数和(自身を含む): 48252120

約数和(自身を除く): 26760220

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 7411, 14822, 29644, 37055, 74110, 148220, 185275, 214919, 370550, 429838, 741100, 859676, 1074595, 2149190, 4298380, 5372975, 10745950, 21491900]

約数ペア:

[(1, 21491900), (2, 10745950), (4, 5372975), (5, 4298380), (10, 2149190), (20, 1074595), (25, 859676), (29, 741100), (50, 429838), (58, 370550), (100, 214919), (116, 185275), (145, 148220), (290, 74110), (580, 37055), (725, 29644), (1450, 14822), (2900, 7411)]