251018728

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:970

約数の個数: 64

約数和(自身を含む): 518918400

約数和(自身を除く): 267899672

約数列:

[1, 2, 4, 8, 19, 38, 41, 47, 76, 82, 94, 152, 164, 188, 328, 376, 779, 857, 893, 1558, 1714, 1786, 1927, 3116, 3428, 3572, 3854, 6232, 6856, 7144, 7708, 15416, 16283, 32566, 35137, 36613, 40279, 65132, 70274, 73226, 80558, 130264, 140548, 146452, 161116, 281096, 292904, 322232, 667603, 765301, 1335206, 1530602, 1651439, 2670412, 3061204, 3302878, 5340824, 6122408, 6605756, 13211512, 31377341, 62754682, 125509364, 251018728]

約数ペア:

[(1, 251018728), (2, 125509364), (4, 62754682), (8, 31377341), (19, 13211512), (38, 6605756), (41, 6122408), (47, 5340824), (76, 3302878), (82, 3061204), (94, 2670412), (152, 1651439), (164, 1530602), (188, 1335206), (328, 765301), (376, 667603), (779, 322232), (857, 292904), (893, 281096), (1558, 161116), (1714, 146452), (1786, 140548), (1927, 130264), (3116, 80558), (3428, 73226), (3572, 70274), (3854, 65132), (6232, 40279), (6856, 36613), (7144, 35137), (7708, 32566), (15416, 16283)]