28966520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1531}}^1$

素因数の和:1596

約数の個数: 64

約数和(自身を含む): 72800640

約数和(自身を除く): 43834120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1531, 1720, 1892, 2365, 3062, 3784, 4730, 6124, 7655, 9460, 12248, 15310, 16841, 18920, 30620, 33682, 61240, 65833, 67364, 84205, 131666, 134728, 168410, 263332, 329165, 336820, 526664, 658330, 673640, 724163, 1316660, 1448326, 2633320, 2896652, 3620815, 5793304, 7241630, 14483260, 28966520]

約数ペア:

[(1, 28966520), (2, 14483260), (4, 7241630), (5, 5793304), (8, 3620815), (10, 2896652), (11, 2633320), (20, 1448326), (22, 1316660), (40, 724163), (43, 673640), (44, 658330), (55, 526664), (86, 336820), (88, 329165), (110, 263332), (172, 168410), (215, 134728), (220, 131666), (344, 84205), (430, 67364), (440, 65833), (473, 61240), (860, 33682), (946, 30620), (1531, 18920), (1720, 16841), (1892, 15310), (2365, 12248), (3062, 9460), (3784, 7655), (4730, 6124)]