251012255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 356227200

約数和(自身を除く): 105214945

約数列:

[1, 5, 13, 29, 37, 59, 61, 65, 145, 185, 295, 305, 377, 481, 767, 793, 1073, 1711, 1769, 1885, 2183, 2257, 2405, 3599, 3835, 3965, 5365, 8555, 8845, 10915, 11285, 13949, 17995, 22243, 22997, 28379, 29341, 46787, 63307, 65453, 69745, 104371, 111215, 114985, 133163, 141895, 146705, 233935, 316535, 327265, 521855, 665815, 822991, 850889, 1356823, 1731119, 3861727, 4114955, 4254445, 6784115, 8655595, 19308635, 50202451, 251012255]

約数ペア:

[(1, 251012255), (5, 50202451), (13, 19308635), (29, 8655595), (37, 6784115), (59, 4254445), (61, 4114955), (65, 3861727), (145, 1731119), (185, 1356823), (295, 850889), (305, 822991), (377, 665815), (481, 521855), (767, 327265), (793, 316535), (1073, 233935), (1711, 146705), (1769, 141895), (1885, 133163), (2183, 114985), (2257, 111215), (2405, 104371), (3599, 69745), (3835, 65453), (3965, 63307), (5365, 46787), (8555, 29341), (8845, 28379), (10915, 22997), (11285, 22243), (13949, 17995)]