28689787

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 7436933

約数列:

[1, 7, 29, 31, 47, 97, 203, 217, 329, 679, 899, 1363, 1457, 2813, 3007, 4559, 6293, 9541, 10199, 19691, 21049, 31913, 42253, 87203, 132211, 141329, 295771, 610421, 925477, 989303, 4098541, 28689787]

約数ペア:

[(1, 28689787), (7, 4098541), (29, 989303), (31, 925477), (47, 610421), (97, 295771), (203, 141329), (217, 132211), (329, 87203), (679, 42253), (899, 31913), (1363, 21049), (1457, 19691), (2813, 10199), (3007, 9541), (4559, 6293)]