1287020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 3205440

約数和(自身を除く): 1918420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 317, 406, 580, 634, 812, 1015, 1268, 1585, 2030, 2219, 3170, 4060, 4438, 6340, 8876, 9193, 11095, 18386, 22190, 36772, 44380, 45965, 64351, 91930, 128702, 183860, 257404, 321755, 643510, 1287020]

約数ペア:

[(1, 1287020), (2, 643510), (4, 321755), (5, 257404), (7, 183860), (10, 128702), (14, 91930), (20, 64351), (28, 45965), (29, 44380), (35, 36772), (58, 22190), (70, 18386), (116, 11095), (140, 9193), (145, 8876), (203, 6340), (290, 4438), (317, 4060), (406, 3170), (580, 2219), (634, 2030), (812, 1585), (1015, 1268)]