257407840

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39239}}^1$

素因数の和:39295

約数の個数: 48

約数和(自身を含む): 622974240

約数和(自身を除く): 365566400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 39239, 78478, 156956, 196195, 313912, 392390, 627824, 784780, 1255648, 1569560, 1608799, 3139120, 3217598, 6278240, 6435196, 8043995, 12870392, 16087990, 25740784, 32175980, 51481568, 64351960, 128703920, 257407840]

約数ペア:

[(1, 257407840), (2, 128703920), (4, 64351960), (5, 51481568), (8, 32175980), (10, 25740784), (16, 16087990), (20, 12870392), (32, 8043995), (40, 6435196), (41, 6278240), (80, 3217598), (82, 3139120), (160, 1608799), (164, 1569560), (205, 1255648), (328, 784780), (410, 627824), (656, 392390), (820, 313912), (1312, 196195), (1640, 156956), (3280, 78478), (6560, 39239)]