21207900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10099}}^1$

素因数の和:10123

約数の個数: 72

約数和(自身を含む): 70134400

約数和(自身を除く): 48926500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10099, 20198, 30297, 40396, 50495, 60594, 70693, 100990, 121188, 141386, 151485, 201980, 212079, 252475, 282772, 302970, 353465, 424158, 504950, 605940, 706930, 757425, 848316, 1009900, 1060395, 1413860, 1514850, 1767325, 2120790, 3029700, 3534650, 4241580, 5301975, 7069300, 10603950, 21207900]

約数ペア:

[(1, 21207900), (2, 10603950), (3, 7069300), (4, 5301975), (5, 4241580), (6, 3534650), (7, 3029700), (10, 2120790), (12, 1767325), (14, 1514850), (15, 1413860), (20, 1060395), (21, 1009900), (25, 848316), (28, 757425), (30, 706930), (35, 605940), (42, 504950), (50, 424158), (60, 353465), (70, 302970), (75, 282772), (84, 252475), (100, 212079), (105, 201980), (140, 151485), (150, 141386), (175, 121188), (210, 100990), (300, 70693), (350, 60594), (420, 50495), (525, 40396), (700, 30297), (1050, 20198), (2100, 10099)]