21256290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:465

約数の個数: 128

約数和(自身を含む): 65629440

約数和(自身を除く): 44373150

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 17, 18, 22, 27, 30, 33, 34, 45, 51, 54, 55, 66, 85, 90, 99, 102, 110, 135, 153, 165, 170, 187, 198, 255, 270, 297, 306, 330, 374, 421, 459, 495, 510, 561, 594, 765, 842, 918, 935, 990, 1122, 1263, 1485, 1530, 1683, 1870, 2105, 2295, 2526, 2805, 2970, 3366, 3789, 4210, 4590, 4631, 5049, 5610, 6315, 7157, 7578, 8415, 9262, 10098, 11367, 12630, 13893, 14314, 16830, 18945, 21471, 22734, 23155, 25245, 27786, 35785, 37890, 41679, 42942, 46310, 50490, 56835, 64413, 69465, 71570, 78727, 83358, 107355, 113670, 125037, 128826, 138930, 157454, 193239, 208395, 214710, 236181, 250074, 322065, 386478, 393635, 416790, 472362, 625185, 644130, 708543, 787270, 966195, 1180905, 1250370, 1417086, 1932390, 2125629, 2361810, 3542715, 4251258, 7085430, 10628145, 21256290]

約数ペア:

[(1, 21256290), (2, 10628145), (3, 7085430), (5, 4251258), (6, 3542715), (9, 2361810), (10, 2125629), (11, 1932390), (15, 1417086), (17, 1250370), (18, 1180905), (22, 966195), (27, 787270), (30, 708543), (33, 644130), (34, 625185), (45, 472362), (51, 416790), (54, 393635), (55, 386478), (66, 322065), (85, 250074), (90, 236181), (99, 214710), (102, 208395), (110, 193239), (135, 157454), (153, 138930), (165, 128826), (170, 125037), (187, 113670), (198, 107355), (255, 83358), (270, 78727), (297, 71570), (306, 69465), (330, 64413), (374, 56835), (421, 50490), (459, 46310), (495, 42942), (510, 41679), (561, 37890), (594, 35785), (765, 27786), (842, 25245), (918, 23155), (935, 22734), (990, 21471), (1122, 18945), (1263, 16830), (1485, 14314), (1530, 13893), (1683, 12630), (1870, 11367), (2105, 10098), (2295, 9262), (2526, 8415), (2805, 7578), (2970, 7157), (3366, 6315), (3789, 5610), (4210, 5049), (4590, 4631)]