21640960

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:114

約数の個数: 144

約数和(自身を含む): 59603040

約数和(自身を除く): 37962080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 53, 55, 58, 64, 80, 88, 106, 110, 116, 128, 145, 160, 176, 212, 220, 232, 256, 265, 290, 319, 320, 352, 424, 440, 464, 530, 580, 583, 638, 640, 704, 848, 880, 928, 1060, 1160, 1166, 1276, 1280, 1408, 1537, 1595, 1696, 1760, 1856, 2120, 2320, 2332, 2552, 2816, 2915, 3074, 3190, 3392, 3520, 3712, 4240, 4640, 4664, 5104, 5830, 6148, 6380, 6784, 7040, 7424, 7685, 8480, 9280, 9328, 10208, 11660, 12296, 12760, 13568, 14080, 15370, 16907, 16960, 18560, 18656, 20416, 23320, 24592, 25520, 30740, 33814, 33920, 37120, 37312, 40832, 46640, 49184, 51040, 61480, 67628, 67840, 74624, 81664, 84535, 93280, 98368, 102080, 122960, 135256, 149248, 169070, 186560, 196736, 204160, 245920, 270512, 338140, 373120, 393472, 408320, 491840, 541024, 676280, 746240, 983680, 1082048, 1352560, 1967360, 2164096, 2705120, 4328192, 5410240, 10820480, 21640960]

約数ペア:

[(1, 21640960), (2, 10820480), (4, 5410240), (5, 4328192), (8, 2705120), (10, 2164096), (11, 1967360), (16, 1352560), (20, 1082048), (22, 983680), (29, 746240), (32, 676280), (40, 541024), (44, 491840), (53, 408320), (55, 393472), (58, 373120), (64, 338140), (80, 270512), (88, 245920), (106, 204160), (110, 196736), (116, 186560), (128, 169070), (145, 149248), (160, 135256), (176, 122960), (212, 102080), (220, 98368), (232, 93280), (256, 84535), (265, 81664), (290, 74624), (319, 67840), (320, 67628), (352, 61480), (424, 51040), (440, 49184), (464, 46640), (530, 40832), (580, 37312), (583, 37120), (638, 33920), (640, 33814), (704, 30740), (848, 25520), (880, 24592), (928, 23320), (1060, 20416), (1160, 18656), (1166, 18560), (1276, 16960), (1280, 16907), (1408, 15370), (1537, 14080), (1595, 13568), (1696, 12760), (1760, 12296), (1856, 11660), (2120, 10208), (2320, 9328), (2332, 9280), (2552, 8480), (2816, 7685), (2915, 7424), (3074, 7040), (3190, 6784), (3392, 6380), (3520, 6148), (3712, 5830), (4240, 5104), (4640, 4664)]