20837565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{797}}^1$

素因数の和:898

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 20990403

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 83, 105, 249, 315, 415, 581, 747, 797, 1245, 1743, 2391, 2905, 3735, 3985, 5229, 5579, 7173, 8715, 11955, 16737, 26145, 27895, 35865, 50211, 66151, 83685, 198453, 251055, 330755, 463057, 595359, 992265, 1389171, 2315285, 2976795, 4167513, 6945855, 20837565]

約数ペア:

[(1, 20837565), (3, 6945855), (5, 4167513), (7, 2976795), (9, 2315285), (15, 1389171), (21, 992265), (35, 595359), (45, 463057), (63, 330755), (83, 251055), (105, 198453), (249, 83685), (315, 66151), (415, 50211), (581, 35865), (747, 27895), (797, 26145), (1245, 16737), (1743, 11955), (2391, 8715), (2905, 7173), (3735, 5579), (3985, 5229)]