21124040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2039}}^1$

素因数の和:2094

約数の個数: 64

約数和(自身を含む): 55814400

約数和(自身を除く): 34690360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2039, 2072, 2590, 4078, 5180, 8156, 10195, 10360, 14273, 16312, 20390, 28546, 40780, 57092, 71365, 75443, 81560, 114184, 142730, 150886, 285460, 301772, 377215, 528101, 570920, 603544, 754430, 1056202, 1508860, 2112404, 2640505, 3017720, 4224808, 5281010, 10562020, 21124040]

約数ペア:

[(1, 21124040), (2, 10562020), (4, 5281010), (5, 4224808), (7, 3017720), (8, 2640505), (10, 2112404), (14, 1508860), (20, 1056202), (28, 754430), (35, 603544), (37, 570920), (40, 528101), (56, 377215), (70, 301772), (74, 285460), (140, 150886), (148, 142730), (185, 114184), (259, 81560), (280, 75443), (296, 71365), (370, 57092), (518, 40780), (740, 28546), (1036, 20390), (1295, 16312), (1480, 14273), (2039, 10360), (2072, 10195), (2590, 8156), (4078, 5180)]