66765475

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{397}}^1$

素因数の和:476

約数の個数: 36

約数和(自身を含む): 98013072

約数和(自身を除く): 31247597

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 397, 775, 961, 1085, 1985, 2779, 4805, 5425, 6727, 9925, 12307, 13895, 24025, 33635, 61535, 69475, 86149, 168175, 307675, 381517, 430745, 1907585, 2153725, 2670619, 9537925, 13353095, 66765475]

約数ペア:

[(1, 66765475), (5, 13353095), (7, 9537925), (25, 2670619), (31, 2153725), (35, 1907585), (155, 430745), (175, 381517), (217, 307675), (397, 168175), (775, 86149), (961, 69475), (1085, 61535), (1985, 33635), (2779, 24025), (4805, 13895), (5425, 12307), (6727, 9925)]