51517980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1823}}^1$

素因数の和:1995

約数の個数: 72

約数和(自身を含む): 157352832

約数和(自身を除く): 105834852

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 785, 942, 1413, 1570, 1823, 1884, 2355, 2826, 3140, 3646, 4710, 5469, 5652, 7065, 7292, 9115, 9420, 10938, 14130, 16407, 18230, 21876, 27345, 28260, 32814, 36460, 54690, 65628, 82035, 109380, 164070, 286211, 328140, 572422, 858633, 1144844, 1431055, 1717266, 2575899, 2862110, 3434532, 4293165, 5151798, 5724220, 8586330, 10303596, 12879495, 17172660, 25758990, 51517980]

約数ペア:

[(1, 51517980), (2, 25758990), (3, 17172660), (4, 12879495), (5, 10303596), (6, 8586330), (9, 5724220), (10, 5151798), (12, 4293165), (15, 3434532), (18, 2862110), (20, 2575899), (30, 1717266), (36, 1431055), (45, 1144844), (60, 858633), (90, 572422), (157, 328140), (180, 286211), (314, 164070), (471, 109380), (628, 82035), (785, 65628), (942, 54690), (1413, 36460), (1570, 32814), (1823, 28260), (1884, 27345), (2355, 21876), (2826, 18230), (3140, 16407), (3646, 14130), (4710, 10938), (5469, 9420), (5652, 9115), (7065, 7292)]