21637605

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1847}}^1$

素因数の和:1937

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 16682523

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 1847, 2343, 3905, 5541, 9235, 11715, 20317, 27705, 60951, 101585, 131137, 304755, 393411, 655685, 1442507, 1967055, 4327521, 7212535, 21637605]

約数ペア:

[(1, 21637605), (3, 7212535), (5, 4327521), (11, 1967055), (15, 1442507), (33, 655685), (55, 393411), (71, 304755), (165, 131137), (213, 101585), (355, 60951), (781, 27705), (1065, 20317), (1847, 11715), (2343, 9235), (3905, 5541)]