155817640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 405907200

約数和(自身を除く): 250089560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 89, 92, 110, 115, 173, 178, 184, 220, 230, 253, 346, 356, 440, 445, 460, 506, 692, 712, 865, 890, 920, 979, 1012, 1265, 1384, 1730, 1780, 1903, 1958, 2024, 2047, 2530, 3460, 3560, 3806, 3916, 3979, 4094, 4895, 5060, 6920, 7612, 7832, 7958, 8188, 9515, 9790, 10120, 10235, 15224, 15397, 15916, 16376, 19030, 19580, 19895, 20470, 22517, 30794, 31832, 38060, 39160, 39790, 40940, 43769, 45034, 61588, 76120, 76985, 79580, 81880, 87538, 90068, 112585, 123176, 153970, 159160, 169367, 175076, 180136, 218845, 225170, 307940, 338734, 350152, 354131, 437690, 450340, 615880, 677468, 708262, 846835, 875380, 900680, 1354936, 1416524, 1693670, 1750760, 1770655, 2833048, 3387340, 3541310, 3895441, 6774680, 7082620, 7790882, 14165240, 15581764, 19477205, 31163528, 38954410, 77908820, 155817640]

約数ペア:

[(1, 155817640), (2, 77908820), (4, 38954410), (5, 31163528), (8, 19477205), (10, 15581764), (11, 14165240), (20, 7790882), (22, 7082620), (23, 6774680), (40, 3895441), (44, 3541310), (46, 3387340), (55, 2833048), (88, 1770655), (89, 1750760), (92, 1693670), (110, 1416524), (115, 1354936), (173, 900680), (178, 875380), (184, 846835), (220, 708262), (230, 677468), (253, 615880), (346, 450340), (356, 437690), (440, 354131), (445, 350152), (460, 338734), (506, 307940), (692, 225170), (712, 218845), (865, 180136), (890, 175076), (920, 169367), (979, 159160), (1012, 153970), (1265, 123176), (1384, 112585), (1730, 90068), (1780, 87538), (1903, 81880), (1958, 79580), (2024, 76985), (2047, 76120), (2530, 61588), (3460, 45034), (3560, 43769), (3806, 40940), (3916, 39790), (3979, 39160), (4094, 38060), (4895, 31832), (5060, 30794), (6920, 22517), (7612, 20470), (7832, 19895), (7958, 19580), (8188, 19030), (9515, 16376), (9790, 15916), (10120, 15397), (10235, 15224)]