21155533

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 24883200

約数和(自身を除く): 3727667

約数列:

[1, 7, 53, 127, 371, 449, 889, 3143, 6731, 23797, 47117, 57023, 166579, 399161, 3022219, 21155533]

約数ペア:

[(1, 21155533), (7, 3022219), (53, 399161), (127, 166579), (371, 57023), (449, 47117), (889, 23797), (3143, 6731)]