157216521

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{1777}}^1$

素因数の和:2181

約数の個数: 32

約数和(自身を含む): 262176768

約数和(自身を除く): 104960247

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 383, 1149, 1777, 2681, 4213, 5331, 8043, 12439, 12639, 19547, 29491, 37317, 58641, 88473, 136829, 410487, 680591, 2041773, 4764137, 7486501, 14292411, 22459503, 52405507, 157216521]

約数ペア:

[(1, 157216521), (3, 52405507), (7, 22459503), (11, 14292411), (21, 7486501), (33, 4764137), (77, 2041773), (231, 680591), (383, 410487), (1149, 136829), (1777, 88473), (2681, 58641), (4213, 37317), (5331, 29491), (8043, 19547), (12439, 12639)]