18157980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^2\times {\mathrm{137}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 52326288

約数和(自身を除く): 34168308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 137, 141, 188, 235, 274, 282, 411, 470, 548, 564, 685, 705, 822, 940, 1370, 1410, 1644, 2055, 2209, 2740, 2820, 4110, 4418, 6439, 6627, 8220, 8836, 11045, 12878, 13254, 19317, 22090, 25756, 26508, 32195, 33135, 38634, 44180, 64390, 66270, 77268, 96585, 128780, 132540, 193170, 302633, 386340, 605266, 907899, 1210532, 1513165, 1815798, 3026330, 3631596, 4539495, 6052660, 9078990, 18157980]

約数ペア:

[(1, 18157980), (2, 9078990), (3, 6052660), (4, 4539495), (5, 3631596), (6, 3026330), (10, 1815798), (12, 1513165), (15, 1210532), (20, 907899), (30, 605266), (47, 386340), (60, 302633), (94, 193170), (137, 132540), (141, 128780), (188, 96585), (235, 77268), (274, 66270), (282, 64390), (411, 44180), (470, 38634), (548, 33135), (564, 32195), (685, 26508), (705, 25756), (822, 22090), (940, 19317), (1370, 13254), (1410, 12878), (1644, 11045), (2055, 8836), (2209, 8220), (2740, 6627), (2820, 6439), (4110, 4418)]