19774580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1031}}^1$

素因数の和:1184

約数の個数: 48

約数和(自身を含む): 47851776

約数和(自身を除く): 28077196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1031, 1370, 1918, 2062, 2740, 3836, 4124, 4795, 5155, 7217, 9590, 10310, 14434, 19180, 20620, 28868, 36085, 72170, 141247, 144340, 282494, 564988, 706235, 988729, 1412470, 1977458, 2824940, 3954916, 4943645, 9887290, 19774580]

約数ペア:

[(1, 19774580), (2, 9887290), (4, 4943645), (5, 3954916), (7, 2824940), (10, 1977458), (14, 1412470), (20, 988729), (28, 706235), (35, 564988), (70, 282494), (137, 144340), (140, 141247), (274, 72170), (548, 36085), (685, 28868), (959, 20620), (1031, 19180), (1370, 14434), (1918, 10310), (2062, 9590), (2740, 7217), (3836, 5155), (4124, 4795)]