20262555

素因数分解:

$3^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:152

約数の個数: 64

約数和(自身を含む): 38966400

約数和(自身を除く): 18703845

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 109, 135, 153, 243, 255, 327, 405, 459, 545, 729, 765, 981, 1215, 1377, 1635, 1853, 2187, 2295, 2943, 3645, 4131, 4905, 5559, 6885, 8829, 9265, 10935, 12393, 14715, 16677, 20655, 26487, 27795, 37179, 44145, 50031, 61965, 79461, 83385, 132435, 150093, 185895, 238383, 250155, 397305, 450279, 750465, 1191915, 1350837, 2251395, 4052511, 6754185, 20262555]

約数ペア:

[(1, 20262555), (3, 6754185), (5, 4052511), (9, 2251395), (15, 1350837), (17, 1191915), (27, 750465), (45, 450279), (51, 397305), (81, 250155), (85, 238383), (109, 185895), (135, 150093), (153, 132435), (243, 83385), (255, 79461), (327, 61965), (405, 50031), (459, 44145), (545, 37179), (729, 27795), (765, 26487), (981, 20655), (1215, 16677), (1377, 14715), (1635, 12393), (1853, 10935), (2187, 9265), (2295, 8829), (2943, 6885), (3645, 5559), (4131, 4905)]