20646500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1$

素因数の和:390

約数の個数: 96

約数和(自身を含む): 54722304

約数和(自身を除く): 34075804

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 50, 68, 70, 85, 100, 119, 125, 140, 170, 175, 238, 250, 340, 347, 350, 425, 476, 500, 595, 694, 700, 850, 875, 1190, 1388, 1700, 1735, 1750, 2125, 2380, 2429, 2975, 3470, 3500, 4250, 4858, 5899, 5950, 6940, 8500, 8675, 9716, 11798, 11900, 12145, 14875, 17350, 23596, 24290, 29495, 29750, 34700, 41293, 43375, 48580, 58990, 59500, 60725, 82586, 86750, 117980, 121450, 147475, 165172, 173500, 206465, 242900, 294950, 303625, 412930, 589900, 607250, 737375, 825860, 1032325, 1214500, 1474750, 2064650, 2949500, 4129300, 5161625, 10323250, 20646500]

約数ペア:

[(1, 20646500), (2, 10323250), (4, 5161625), (5, 4129300), (7, 2949500), (10, 2064650), (14, 1474750), (17, 1214500), (20, 1032325), (25, 825860), (28, 737375), (34, 607250), (35, 589900), (50, 412930), (68, 303625), (70, 294950), (85, 242900), (100, 206465), (119, 173500), (125, 165172), (140, 147475), (170, 121450), (175, 117980), (238, 86750), (250, 82586), (340, 60725), (347, 59500), (350, 58990), (425, 48580), (476, 43375), (500, 41293), (595, 34700), (694, 29750), (700, 29495), (850, 24290), (875, 23596), (1190, 17350), (1388, 14875), (1700, 12145), (1735, 11900), (1750, 11798), (2125, 9716), (2380, 8675), (2429, 8500), (2975, 6940), (3470, 5950), (3500, 5899), (4250, 4858)]