20762865

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 19153935

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 83, 85, 109, 135, 153, 249, 255, 327, 415, 459, 545, 747, 765, 981, 1245, 1411, 1635, 1853, 2241, 2295, 2943, 3735, 4233, 4905, 5559, 7055, 9047, 9265, 11205, 12699, 14715, 16677, 21165, 27141, 27795, 38097, 45235, 50031, 63495, 81423, 83385, 135705, 153799, 190485, 244269, 250155, 407115, 461397, 768995, 1221345, 1384191, 2306985, 4152573, 6920955, 20762865]

約数ペア:

[(1, 20762865), (3, 6920955), (5, 4152573), (9, 2306985), (15, 1384191), (17, 1221345), (27, 768995), (45, 461397), (51, 407115), (83, 250155), (85, 244269), (109, 190485), (135, 153799), (153, 135705), (249, 83385), (255, 81423), (327, 63495), (415, 50031), (459, 45235), (545, 38097), (747, 27795), (765, 27141), (981, 21165), (1245, 16677), (1411, 14715), (1635, 12699), (1853, 11205), (2241, 9265), (2295, 9047), (2943, 7055), (3735, 5559), (4233, 4905)]