128969060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:557

約数の個数: 72

約数和(自身を含む): 300638520

約数和(自身を除く): 171669460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 137, 220, 242, 274, 389, 484, 548, 605, 685, 778, 1210, 1370, 1507, 1556, 1945, 2420, 2740, 3014, 3890, 4279, 6028, 7535, 7780, 8558, 15070, 16577, 17116, 21395, 30140, 33154, 42790, 47069, 53293, 66308, 82885, 85580, 94138, 106586, 165770, 188276, 213172, 235345, 266465, 331540, 470690, 532930, 586223, 941380, 1065860, 1172446, 2344892, 2931115, 5862230, 6448453, 11724460, 12896906, 25793812, 32242265, 64484530, 128969060]

約数ペア:

[(1, 128969060), (2, 64484530), (4, 32242265), (5, 25793812), (10, 12896906), (11, 11724460), (20, 6448453), (22, 5862230), (44, 2931115), (55, 2344892), (110, 1172446), (121, 1065860), (137, 941380), (220, 586223), (242, 532930), (274, 470690), (389, 331540), (484, 266465), (548, 235345), (605, 213172), (685, 188276), (778, 165770), (1210, 106586), (1370, 94138), (1507, 85580), (1556, 82885), (1945, 66308), (2420, 53293), (2740, 47069), (3014, 42790), (3890, 33154), (4279, 30140), (6028, 21395), (7535, 17116), (7780, 16577), (8558, 15070)]