18985456

素因数分解:

$2^4\times 7^1\times {\mathrm{179}}^1\times {\mathrm{947}}^1$

素因数の和:1141

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 23333264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 179, 358, 716, 947, 1253, 1432, 1894, 2506, 2864, 3788, 5012, 6629, 7576, 10024, 13258, 15152, 20048, 26516, 53032, 106064, 169513, 339026, 678052, 1186591, 1356104, 2373182, 2712208, 4746364, 9492728, 18985456]

約数ペア:

[(1, 18985456), (2, 9492728), (4, 4746364), (7, 2712208), (8, 2373182), (14, 1356104), (16, 1186591), (28, 678052), (56, 339026), (112, 169513), (179, 106064), (358, 53032), (716, 26516), (947, 20048), (1253, 15152), (1432, 13258), (1894, 10024), (2506, 7576), (2864, 6629), (3788, 5012)]