201720861

素因数分解:

$3^6\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:473

約数の個数: 56

約数和(自身を含む): 328870584

約数和(自身を除く): 127149723

約数列:

[1, 3, 9, 17, 27, 41, 51, 81, 123, 153, 243, 369, 397, 459, 697, 729, 1107, 1191, 1377, 2091, 3321, 3573, 4131, 6273, 6749, 9963, 10719, 12393, 16277, 18819, 20247, 29889, 32157, 48831, 56457, 60741, 96471, 146493, 169371, 182223, 276709, 289413, 439479, 508113, 546669, 830127, 1318437, 1640007, 2490381, 3955311, 4920021, 7471143, 11865933, 22413429, 67240287, 201720861]

約数ペア:

[(1, 201720861), (3, 67240287), (9, 22413429), (17, 11865933), (27, 7471143), (41, 4920021), (51, 3955311), (81, 2490381), (123, 1640007), (153, 1318437), (243, 830127), (369, 546669), (397, 508113), (459, 439479), (697, 289413), (729, 276709), (1107, 182223), (1191, 169371), (1377, 146493), (2091, 96471), (3321, 60741), (3573, 56457), (4131, 48831), (6273, 32157), (6749, 29889), (9963, 20247), (10719, 18819), (12393, 16277)]