20687564877

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1511}}^1\times {\mathrm{38351}}^1$

素因数の和:39889

約数の個数: 32

約数和(自身を含む): 33401217024

約数和(自身を除く): 12713652147

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 1511, 4533, 10577, 25687, 31731, 38351, 77061, 115053, 179809, 268457, 539427, 651967, 805371, 1955901, 4563769, 13691307, 57948361, 173845083, 405638527, 985122137, 1216915581, 2955366411, 6895854959, 20687564877]

約数ペア:

[(1, 20687564877), (3, 6895854959), (7, 2955366411), (17, 1216915581), (21, 985122137), (51, 405638527), (119, 173845083), (357, 57948361), (1511, 13691307), (4533, 4563769), (10577, 1955901), (25687, 805371), (31731, 651967), (38351, 539427), (77061, 268457), (115053, 179809)]