20682081

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 38223360

約数和(自身を除く): 17541279

約数列:

[1, 3, 7, 9, 17, 21, 27, 41, 51, 63, 119, 123, 153, 157, 189, 287, 357, 369, 459, 471, 697, 861, 1071, 1099, 1107, 1413, 2091, 2583, 2669, 3213, 3297, 4239, 4879, 6273, 6437, 7749, 8007, 9891, 14637, 18683, 18819, 19311, 24021, 29673, 43911, 45059, 56049, 57933, 72063, 109429, 131733, 135177, 168147, 173799, 328287, 405531, 504441, 766003, 984861, 1216593, 2298009, 2954583, 6894027, 20682081]

約数ペア:

[(1, 20682081), (3, 6894027), (7, 2954583), (9, 2298009), (17, 1216593), (21, 984861), (27, 766003), (41, 504441), (51, 405531), (63, 328287), (119, 173799), (123, 168147), (153, 135177), (157, 131733), (189, 109429), (287, 72063), (357, 57933), (369, 56049), (459, 45059), (471, 43911), (697, 29673), (861, 24021), (1071, 19311), (1099, 18819), (1107, 18683), (1413, 14637), (2091, 9891), (2583, 8007), (2669, 7749), (3213, 6437), (3297, 6273), (4239, 4879)]