64719475

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^2\times {\mathrm{61}}^1$

素因数の和:176

約数の個数: 36

約数和(自身を含む): 86536128

約数和(自身を除く): 21816653

約数列:

[1, 5, 25, 31, 37, 61, 155, 185, 305, 775, 925, 1147, 1369, 1525, 1891, 2257, 5735, 6845, 9455, 11285, 28675, 34225, 42439, 47275, 56425, 69967, 83509, 212195, 349835, 417545, 1060975, 1749175, 2087725, 2588779, 12943895, 64719475]

約数ペア:

[(1, 64719475), (5, 12943895), (25, 2588779), (31, 2087725), (37, 1749175), (61, 1060975), (155, 417545), (185, 349835), (305, 212195), (775, 83509), (925, 69967), (1147, 56425), (1369, 47275), (1525, 42439), (1891, 34225), (2257, 28675), (5735, 11285), (6845, 9455)]