257989480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{467}}^1\times {\mathrm{1973}}^1$

素因数の和:2458

約数の個数: 64

約数和(自身を含む): 665159040

約数和(自身を除く): 407169560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 467, 934, 1868, 1973, 2335, 3269, 3736, 3946, 4670, 6538, 7892, 9340, 9865, 13076, 13811, 15784, 16345, 18680, 19730, 26152, 27622, 32690, 39460, 55244, 65380, 69055, 78920, 110488, 130760, 138110, 276220, 552440, 921391, 1842782, 3685564, 4606955, 6449737, 7371128, 9213910, 12899474, 18427820, 25798948, 32248685, 36855640, 51597896, 64497370, 128994740, 257989480]

約数ペア:

[(1, 257989480), (2, 128994740), (4, 64497370), (5, 51597896), (7, 36855640), (8, 32248685), (10, 25798948), (14, 18427820), (20, 12899474), (28, 9213910), (35, 7371128), (40, 6449737), (56, 4606955), (70, 3685564), (140, 1842782), (280, 921391), (467, 552440), (934, 276220), (1868, 138110), (1973, 130760), (2335, 110488), (3269, 78920), (3736, 69055), (3946, 65380), (4670, 55244), (6538, 39460), (7892, 32690), (9340, 27622), (9865, 26152), (13076, 19730), (13811, 18680), (15784, 16345)]