20927361

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14925183

約数列:

[1, 3, 7, 13, 21, 39, 47, 49, 91, 141, 147, 233, 273, 329, 611, 637, 699, 987, 1631, 1833, 1911, 2303, 3029, 4277, 4893, 6909, 9087, 10951, 11417, 12831, 21203, 29939, 32853, 34251, 63609, 76657, 89817, 142363, 148421, 229971, 427089, 445263, 536599, 996541, 1609797, 2989623, 6975787, 20927361]

約数ペア:

[(1, 20927361), (3, 6975787), (7, 2989623), (13, 1609797), (21, 996541), (39, 536599), (47, 445263), (49, 427089), (91, 229971), (141, 148421), (147, 142363), (233, 89817), (273, 76657), (329, 63609), (611, 34251), (637, 32853), (699, 29939), (987, 21203), (1631, 12831), (1833, 11417), (1911, 10951), (2303, 9087), (3029, 6909), (4277, 4893)]