20938095

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{907}}^1$

素因数の和:946

約数の個数: 48

約数和(自身を含む): 39661440

約数和(自身を除く): 18723345

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 405, 513, 855, 907, 1215, 1539, 2565, 2721, 4535, 4617, 7695, 8163, 13605, 17233, 23085, 24489, 40815, 51699, 73467, 86165, 122445, 155097, 220401, 258495, 367335, 465291, 775485, 1102005, 1395873, 2326455, 4187619, 6979365, 20938095]

約数ペア:

[(1, 20938095), (3, 6979365), (5, 4187619), (9, 2326455), (15, 1395873), (19, 1102005), (27, 775485), (45, 465291), (57, 367335), (81, 258495), (95, 220401), (135, 155097), (171, 122445), (243, 86165), (285, 73467), (405, 51699), (513, 40815), (855, 24489), (907, 23085), (1215, 17233), (1539, 13605), (2565, 8163), (2721, 7695), (4535, 4617)]