20808400857

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1\times {\mathrm{613}}^1\times {\mathrm{971}}^1$

素因数の和:1901

約数の個数: 32

約数和(自身を含む): 28570392576

約数和(自身を除く): 7761991719

約数列:

[1, 3, 43, 129, 271, 613, 813, 971, 1839, 2913, 11653, 26359, 34959, 41753, 79077, 125259, 166123, 263141, 498369, 595223, 789423, 1785669, 7143289, 11315063, 21429867, 25594589, 33945189, 76783767, 161305433, 483916299, 6936133619, 20808400857]

約数ペア:

[(1, 20808400857), (3, 6936133619), (43, 483916299), (129, 161305433), (271, 76783767), (613, 33945189), (813, 25594589), (971, 21429867), (1839, 11315063), (2913, 7143289), (11653, 1785669), (26359, 789423), (34959, 595223), (41753, 498369), (79077, 263141), (125259, 166123)]