20308769.000000000

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2909}}^1$

素因数の和:2974

約数の個数: 96

約数和(自身を含む): 387192960

約数和(自身を除く): 247095520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 70, 80, 86, 112, 140, 160, 172, 215, 224, 280, 301, 344, 430, 560, 602, 688, 860, 1120, 1204, 1376, 1505, 1720, 2408, 2909, 3010, 3440, 4816, 5818, 6020, 6880, 9632, 11636, 12040, 14545, 20363, 23272, 24080, 29090, 40726, 46544, 48160, 58180, 81452, 93088, 101815, 116360, 125087, 162904, 203630, 232720, 250174, 325808, 407260, 465440, 500348, 625435, 651616, 814520, 875609, 1000696, 1250870, 1629040, 1751218, 2001392, 2501740, 3258080, 3502436, 4002784, 4378045, 5003480, 7004872, 8756090, 10006960, 14009744, 17512180, 20013920, 28019488, 35024360, 70048720, 140097440]

約数ペア:

[(1, 140097440), (2, 70048720), (4, 35024360), (5, 28019488), (7, 20013920), (8, 17512180), (10, 14009744), (14, 10006960), (16, 8756090), (20, 7004872), (28, 5003480), (32, 4378045), (35, 4002784), (40, 3502436), (43, 3258080), (56, 2501740), (70, 2001392), (80, 1751218), (86, 1629040), (112, 1250870), (140, 1000696), (160, 875609), (172, 814520), (215, 651616), (224, 625435), (280, 500348), (301, 465440), (344, 407260), (430, 325808), (560, 250174), (602, 232720), (688, 203630), (860, 162904), (1120, 125087), (1204, 116360), (1376, 101815), (1505, 93088), (1720, 81452), (2408, 58180), (2909, 48160), (3010, 46544), (3440, 40726), (4816, 29090), (5818, 24080), (6020, 23272), (6880, 20363), (9632, 14545), (11636, 12040)]