128421576

素因数分解:

$2^3\times 3^2\times {\mathrm{997}}^1\times {\mathrm{1789}}^1$

素因数の和:2798

約数の個数: 48

約数和(自身を含む): 348351900

約数和(自身を除く): 219930324

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 997, 1789, 1994, 2991, 3578, 3988, 5367, 5982, 7156, 7976, 8973, 10734, 11964, 14312, 16101, 17946, 21468, 23928, 32202, 35892, 42936, 64404, 71784, 128808, 1783633, 3567266, 5350899, 7134532, 10701798, 14269064, 16052697, 21403596, 32105394, 42807192, 64210788, 128421576]

約数ペア:

[(1, 128421576), (2, 64210788), (3, 42807192), (4, 32105394), (6, 21403596), (8, 16052697), (9, 14269064), (12, 10701798), (18, 7134532), (24, 5350899), (36, 3567266), (72, 1783633), (997, 128808), (1789, 71784), (1994, 64404), (2991, 42936), (3578, 35892), (3988, 32202), (5367, 23928), (5982, 21468), (7156, 17946), (7976, 16101), (8973, 14312), (10734, 11964)]