20617548

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3457}}^1$

素因数の和:3542

約数の個数: 48

約数和(自身を含む): 55770624

約数和(自身を除く): 35153076

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 142, 213, 284, 426, 497, 852, 994, 1491, 1988, 2982, 3457, 5964, 6914, 10371, 13828, 20742, 24199, 41484, 48398, 72597, 96796, 145194, 245447, 290388, 490894, 736341, 981788, 1472682, 1718129, 2945364, 3436258, 5154387, 6872516, 10308774, 20617548]

約数ペア:

[(1, 20617548), (2, 10308774), (3, 6872516), (4, 5154387), (6, 3436258), (7, 2945364), (12, 1718129), (14, 1472682), (21, 981788), (28, 736341), (42, 490894), (71, 290388), (84, 245447), (142, 145194), (213, 96796), (284, 72597), (426, 48398), (497, 41484), (852, 24199), (994, 20742), (1491, 13828), (1988, 10371), (2982, 6914), (3457, 5964)]