21203060

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 25366540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 263, 278, 290, 526, 556, 580, 695, 1052, 1315, 1390, 2630, 2780, 4031, 5260, 7627, 8062, 15254, 16124, 20155, 30508, 36557, 38135, 40310, 73114, 76270, 80620, 146228, 152540, 182785, 365570, 731140, 1060153, 2120306, 4240612, 5300765, 10601530, 21203060]

約数ペア:

[(1, 21203060), (2, 10601530), (4, 5300765), (5, 4240612), (10, 2120306), (20, 1060153), (29, 731140), (58, 365570), (116, 182785), (139, 152540), (145, 146228), (263, 80620), (278, 76270), (290, 73114), (526, 40310), (556, 38135), (580, 36557), (695, 30508), (1052, 20155), (1315, 16124), (1390, 15254), (2630, 8062), (2780, 7627), (4031, 5260)]