1245014980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{499}}^1\times {\mathrm{1031}}^1$

素因数の和:1561

約数の個数: 72

約数和(自身を含む): 2882376000

約数和(自身を除く): 1637361020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 499, 605, 998, 1031, 1210, 1996, 2062, 2420, 2495, 4124, 4990, 5155, 5489, 9980, 10310, 10978, 11341, 20620, 21956, 22682, 27445, 45364, 54890, 56705, 60379, 109780, 113410, 120758, 124751, 226820, 241516, 249502, 301895, 499004, 514469, 603790, 623755, 1028938, 1207580, 1247510, 2057876, 2495020, 2572345, 5144690, 5659159, 10289380, 11318318, 22636636, 28295795, 56591590, 62250749, 113183180, 124501498, 249002996, 311253745, 622507490, 1245014980]

約数ペア:

[(1, 1245014980), (2, 622507490), (4, 311253745), (5, 249002996), (10, 124501498), (11, 113183180), (20, 62250749), (22, 56591590), (44, 28295795), (55, 22636636), (110, 11318318), (121, 10289380), (220, 5659159), (242, 5144690), (484, 2572345), (499, 2495020), (605, 2057876), (998, 1247510), (1031, 1207580), (1210, 1028938), (1996, 623755), (2062, 603790), (2420, 514469), (2495, 499004), (4124, 301895), (4990, 249502), (5155, 241516), (5489, 226820), (9980, 124751), (10310, 120758), (10978, 113410), (11341, 109780), (20620, 60379), (21956, 56705), (22682, 54890), (27445, 45364)]