21836220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51991}}^1$

素因数の和:52010

約数の個数: 48

約数和(自身を含む): 69877248

約数和(自身を除く): 48041028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51991, 103982, 155973, 207964, 259955, 311946, 363937, 519910, 623892, 727874, 779865, 1039820, 1091811, 1455748, 1559730, 1819685, 2183622, 3119460, 3639370, 4367244, 5459055, 7278740, 10918110, 21836220]

約数ペア:

[(1, 21836220), (2, 10918110), (3, 7278740), (4, 5459055), (5, 4367244), (6, 3639370), (7, 3119460), (10, 2183622), (12, 1819685), (14, 1559730), (15, 1455748), (20, 1091811), (21, 1039820), (28, 779865), (30, 727874), (35, 623892), (42, 519910), (60, 363937), (70, 311946), (84, 259955), (105, 207964), (140, 155973), (210, 103982), (420, 51991)]