20095785

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 37374480

約数和(自身を除く): 17278695

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 109, 153, 241, 255, 327, 545, 723, 765, 981, 1205, 1635, 1853, 2169, 3615, 4097, 4905, 5559, 9265, 10845, 12291, 16677, 20485, 26269, 27795, 36873, 61455, 78807, 83385, 131345, 184365, 236421, 394035, 446573, 1182105, 1339719, 2232865, 4019157, 6698595, 20095785]

約数ペア:

[(1, 20095785), (3, 6698595), (5, 4019157), (9, 2232865), (15, 1339719), (17, 1182105), (45, 446573), (51, 394035), (85, 236421), (109, 184365), (153, 131345), (241, 83385), (255, 78807), (327, 61455), (545, 36873), (723, 27795), (765, 26269), (981, 20485), (1205, 16677), (1635, 12291), (1853, 10845), (2169, 9265), (3615, 5559), (4097, 4905)]