28378385

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 40919040

約数和(自身を除く): 12540655

約数列:

[1, 5, 7, 29, 35, 73, 145, 203, 365, 383, 511, 1015, 1915, 2117, 2555, 2681, 10585, 11107, 13405, 14819, 27959, 55535, 74095, 77749, 139795, 195713, 388745, 810811, 978565, 4054055, 5675677, 28378385]

約数ペア:

[(1, 28378385), (5, 5675677), (7, 4054055), (29, 978565), (35, 810811), (73, 388745), (145, 195713), (203, 139795), (365, 77749), (383, 74095), (511, 55535), (1015, 27959), (1915, 14819), (2117, 13405), (2555, 11107), (2681, 10585)]