20935005

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{313}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 42201600

約数和(自身を除く): 21266595

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 313, 343, 455, 637, 735, 939, 1029, 1365, 1565, 1715, 1911, 2191, 3185, 4069, 4459, 4695, 5145, 6573, 9555, 10955, 12207, 13377, 15337, 20345, 22295, 28483, 32865, 46011, 61035, 66885, 76685, 85449, 107359, 142415, 199381, 230055, 322077, 427245, 536795, 598143, 996905, 1395667, 1610385, 2990715, 4187001, 6978335, 20935005]

約数ペア:

[(1, 20935005), (3, 6978335), (5, 4187001), (7, 2990715), (13, 1610385), (15, 1395667), (21, 996905), (35, 598143), (39, 536795), (49, 427245), (65, 322077), (91, 230055), (105, 199381), (147, 142415), (195, 107359), (245, 85449), (273, 76685), (313, 66885), (343, 61035), (455, 46011), (637, 32865), (735, 28483), (939, 22295), (1029, 20345), (1365, 15337), (1565, 13377), (1715, 12207), (1911, 10955), (2191, 9555), (3185, 6573), (4069, 5145), (4459, 4695)]