21241143

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{601}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 41610240

約数和(自身を除く): 20369097

約数列:

[1, 3, 7, 9, 11, 17, 21, 27, 33, 51, 63, 77, 99, 119, 153, 187, 189, 231, 297, 357, 459, 561, 601, 693, 1071, 1309, 1683, 1803, 2079, 3213, 3927, 4207, 5049, 5409, 6611, 10217, 11781, 12621, 16227, 19833, 30651, 35343, 37863, 46277, 59499, 71519, 91953, 112387, 113589, 138831, 178497, 214557, 275859, 337161, 416493, 643671, 786709, 1011483, 1249479, 1931013, 2360127, 3034449, 7080381, 21241143]

約数ペア:

[(1, 21241143), (3, 7080381), (7, 3034449), (9, 2360127), (11, 1931013), (17, 1249479), (21, 1011483), (27, 786709), (33, 643671), (51, 416493), (63, 337161), (77, 275859), (99, 214557), (119, 178497), (153, 138831), (187, 113589), (189, 112387), (231, 91953), (297, 71519), (357, 59499), (459, 46277), (561, 37863), (601, 35343), (693, 30651), (1071, 19833), (1309, 16227), (1683, 12621), (1803, 11781), (2079, 10217), (3213, 6611), (3927, 5409), (4207, 5049)]