21189476

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{773}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 25622044

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 89, 154, 178, 308, 356, 623, 773, 979, 1246, 1546, 1958, 2492, 3092, 3916, 5411, 6853, 8503, 10822, 13706, 17006, 21644, 27412, 34012, 59521, 68797, 119042, 137594, 238084, 275188, 481579, 756767, 963158, 1513534, 1926316, 3027068, 5297369, 10594738, 21189476]

約数ペア:

[(1, 21189476), (2, 10594738), (4, 5297369), (7, 3027068), (11, 1926316), (14, 1513534), (22, 963158), (28, 756767), (44, 481579), (77, 275188), (89, 238084), (154, 137594), (178, 119042), (308, 68797), (356, 59521), (623, 34012), (773, 27412), (979, 21644), (1246, 17006), (1546, 13706), (1958, 10822), (2492, 8503), (3092, 6853), (3916, 5411)]