20921844720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12453479}}^1$

素因数の和:12453502

約数の個数: 80

約数和(自身を含む): 74123112960

約数和(自身を除く): 53201268240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12453479, 24906958, 37360437, 49813916, 62267395, 74720874, 87174353, 99627832, 124534790, 149441748, 174348706, 186802185, 199255664, 249069580, 261523059, 298883496, 348697412, 373604370, 435871765, 498139160, 523046118, 597766992, 697394824, 747208740, 871743530, 996278320, 1046092236, 1307615295, 1394789648, 1494417480, 1743487060, 2092184472, 2615230590, 2988834960, 3486974120, 4184368944, 5230461180, 6973948240, 10460922360, 20921844720]

約数ペア:

[(1, 20921844720), (2, 10460922360), (3, 6973948240), (4, 5230461180), (5, 4184368944), (6, 3486974120), (7, 2988834960), (8, 2615230590), (10, 2092184472), (12, 1743487060), (14, 1494417480), (15, 1394789648), (16, 1307615295), (20, 1046092236), (21, 996278320), (24, 871743530), (28, 747208740), (30, 697394824), (35, 597766992), (40, 523046118), (42, 498139160), (48, 435871765), (56, 373604370), (60, 348697412), (70, 298883496), (80, 261523059), (84, 249069580), (105, 199255664), (112, 186802185), (120, 174348706), (140, 149441748), (168, 124534790), (210, 99627832), (240, 87174353), (280, 74720874), (336, 62267395), (420, 49813916), (560, 37360437), (840, 24906958), (1680, 12453479)]