128142280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{457651}}^1$

素因数の和:457669

約数の個数: 32

約数和(自身を含む): 329509440

約数和(自身を除く): 201367160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 457651, 915302, 1830604, 2288255, 3203557, 3661208, 4576510, 6407114, 9153020, 12814228, 16017785, 18306040, 25628456, 32035570, 64071140, 128142280]

約数ペア:

[(1, 128142280), (2, 64071140), (4, 32035570), (5, 25628456), (7, 18306040), (8, 16017785), (10, 12814228), (14, 9153020), (20, 6407114), (28, 4576510), (35, 3661208), (40, 3203557), (56, 2288255), (70, 1830604), (140, 915302), (280, 457651)]