1638851840

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{853}}^1$

素因数の和:972

約数の個数: 144

約数和(自身を含む): 4189382400

約数和(自身を除く): 2550530560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 79, 80, 95, 128, 152, 158, 160, 190, 256, 304, 316, 320, 380, 395, 608, 632, 640, 760, 790, 853, 1216, 1264, 1280, 1501, 1520, 1580, 1706, 2432, 2528, 3002, 3040, 3160, 3412, 4265, 4864, 5056, 6004, 6080, 6320, 6824, 7505, 8530, 10112, 12008, 12160, 12640, 13648, 15010, 16207, 17060, 20224, 24016, 24320, 25280, 27296, 30020, 32414, 34120, 48032, 50560, 54592, 60040, 64828, 67387, 68240, 81035, 96064, 101120, 109184, 120080, 129656, 134774, 136480, 162070, 192128, 218368, 240160, 259312, 269548, 272960, 324140, 336935, 384256, 480320, 518624, 539096, 545920, 648280, 673870, 960640, 1037248, 1078192, 1091840, 1280353, 1296560, 1347740, 1921280, 2074496, 2156384, 2560706, 2593120, 2695480, 4148992, 4312768, 5121412, 5186240, 5390960, 6401765, 8625536, 10242824, 10372480, 10781920, 12803530, 17251072, 20485648, 20744960, 21563840, 25607060, 40971296, 43127680, 51214120, 81942592, 86255360, 102428240, 163885184, 204856480, 327770368, 409712960, 819425920, 1638851840]

約数ペア:

[(1, 1638851840), (2, 819425920), (4, 409712960), (5, 327770368), (8, 204856480), (10, 163885184), (16, 102428240), (19, 86255360), (20, 81942592), (32, 51214120), (38, 43127680), (40, 40971296), (64, 25607060), (76, 21563840), (79, 20744960), (80, 20485648), (95, 17251072), (128, 12803530), (152, 10781920), (158, 10372480), (160, 10242824), (190, 8625536), (256, 6401765), (304, 5390960), (316, 5186240), (320, 5121412), (380, 4312768), (395, 4148992), (608, 2695480), (632, 2593120), (640, 2560706), (760, 2156384), (790, 2074496), (853, 1921280), (1216, 1347740), (1264, 1296560), (1280, 1280353), (1501, 1091840), (1520, 1078192), (1580, 1037248), (1706, 960640), (2432, 673870), (2528, 648280), (3002, 545920), (3040, 539096), (3160, 518624), (3412, 480320), (4265, 384256), (4864, 336935), (5056, 324140), (6004, 272960), (6080, 269548), (6320, 259312), (6824, 240160), (7505, 218368), (8530, 192128), (10112, 162070), (12008, 136480), (12160, 134774), (12640, 129656), (13648, 120080), (15010, 109184), (16207, 101120), (17060, 96064), (20224, 81035), (24016, 68240), (24320, 67387), (25280, 64828), (27296, 60040), (30020, 54592), (32414, 50560), (34120, 48032)]