81509440

素因数分解:

$2^6\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1423}}^1$

素因数の和:1619

約数の個数: 56

約数和(自身を含む): 195315840

約数和(自身を除く): 113806400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 179, 320, 358, 716, 895, 1423, 1432, 1790, 2846, 2864, 3580, 5692, 5728, 7115, 7160, 11384, 11456, 14230, 14320, 22768, 28460, 28640, 45536, 56920, 57280, 91072, 113840, 227680, 254717, 455360, 509434, 1018868, 1273585, 2037736, 2547170, 4075472, 5094340, 8150944, 10188680, 16301888, 20377360, 40754720, 81509440]

約数ペア:

[(1, 81509440), (2, 40754720), (4, 20377360), (5, 16301888), (8, 10188680), (10, 8150944), (16, 5094340), (20, 4075472), (32, 2547170), (40, 2037736), (64, 1273585), (80, 1018868), (160, 509434), (179, 455360), (320, 254717), (358, 227680), (716, 113840), (895, 91072), (1423, 57280), (1432, 56920), (1790, 45536), (2846, 28640), (2864, 28460), (3580, 22768), (5692, 14320), (5728, 14230), (7115, 11456), (7160, 11384)]