221491280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:185

約数の個数: 120

約数和(自身を含む): 552616416

約数和(自身を除く): 331125136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 43, 62, 67, 80, 86, 124, 134, 155, 172, 215, 248, 268, 310, 335, 344, 430, 496, 536, 620, 670, 688, 860, 961, 1072, 1240, 1333, 1340, 1720, 1922, 2077, 2480, 2666, 2680, 2881, 3440, 3844, 4154, 4805, 5332, 5360, 5762, 6665, 7688, 8308, 9610, 10385, 10664, 11524, 13330, 14405, 15376, 16616, 19220, 20770, 21328, 23048, 26660, 28810, 33232, 38440, 41323, 41540, 46096, 53320, 57620, 64387, 76880, 82646, 83080, 89311, 106640, 115240, 128774, 165292, 166160, 178622, 206615, 230480, 257548, 321935, 330584, 357244, 413230, 446555, 515096, 643870, 661168, 714488, 826460, 893110, 1030192, 1287740, 1428976, 1652920, 1786220, 2575480, 2768641, 3305840, 3572440, 5150960, 5537282, 7144880, 11074564, 13843205, 22149128, 27686410, 44298256, 55372820, 110745640, 221491280]

約数ペア:

[(1, 221491280), (2, 110745640), (4, 55372820), (5, 44298256), (8, 27686410), (10, 22149128), (16, 13843205), (20, 11074564), (31, 7144880), (40, 5537282), (43, 5150960), (62, 3572440), (67, 3305840), (80, 2768641), (86, 2575480), (124, 1786220), (134, 1652920), (155, 1428976), (172, 1287740), (215, 1030192), (248, 893110), (268, 826460), (310, 714488), (335, 661168), (344, 643870), (430, 515096), (496, 446555), (536, 413230), (620, 357244), (670, 330584), (688, 321935), (860, 257548), (961, 230480), (1072, 206615), (1240, 178622), (1333, 166160), (1340, 165292), (1720, 128774), (1922, 115240), (2077, 106640), (2480, 89311), (2666, 83080), (2680, 82646), (2881, 76880), (3440, 64387), (3844, 57620), (4154, 53320), (4805, 46096), (5332, 41540), (5360, 41323), (5762, 38440), (6665, 33232), (7688, 28810), (8308, 26660), (9610, 23048), (10385, 21328), (10664, 20770), (11524, 19220), (13330, 16616), (14405, 15376)]