21756840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:519

約数の個数: 128

約数和(自身を含む): 76032000

約数和(自身を除く): 54275160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 59, 60, 70, 84, 105, 118, 120, 140, 168, 177, 210, 236, 280, 295, 354, 413, 420, 439, 472, 590, 708, 826, 840, 878, 885, 1180, 1239, 1317, 1416, 1652, 1756, 1770, 2065, 2195, 2360, 2478, 2634, 3073, 3304, 3512, 3540, 4130, 4390, 4956, 5268, 6146, 6195, 6585, 7080, 8260, 8780, 9219, 9912, 10536, 12292, 12390, 13170, 15365, 16520, 17560, 18438, 24584, 24780, 25901, 26340, 30730, 36876, 46095, 49560, 51802, 52680, 61460, 73752, 77703, 92190, 103604, 122920, 129505, 155406, 181307, 184380, 207208, 259010, 310812, 362614, 368760, 388515, 518020, 543921, 621624, 725228, 777030, 906535, 1036040, 1087842, 1450456, 1554060, 1813070, 2175684, 2719605, 3108120, 3626140, 4351368, 5439210, 7252280, 10878420, 21756840]

約数ペア:

[(1, 21756840), (2, 10878420), (3, 7252280), (4, 5439210), (5, 4351368), (6, 3626140), (7, 3108120), (8, 2719605), (10, 2175684), (12, 1813070), (14, 1554060), (15, 1450456), (20, 1087842), (21, 1036040), (24, 906535), (28, 777030), (30, 725228), (35, 621624), (40, 543921), (42, 518020), (56, 388515), (59, 368760), (60, 362614), (70, 310812), (84, 259010), (105, 207208), (118, 184380), (120, 181307), (140, 155406), (168, 129505), (177, 122920), (210, 103604), (236, 92190), (280, 77703), (295, 73752), (354, 61460), (413, 52680), (420, 51802), (439, 49560), (472, 46095), (590, 36876), (708, 30730), (826, 26340), (840, 25901), (878, 24780), (885, 24584), (1180, 18438), (1239, 17560), (1317, 16520), (1416, 15365), (1652, 13170), (1756, 12390), (1770, 12292), (2065, 10536), (2195, 9912), (2360, 9219), (2478, 8780), (2634, 8260), (3073, 7080), (3304, 6585), (3512, 6195), (3540, 6146), (4130, 5268), (4390, 4956)]