290057720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{937}}^1$

素因数の和:1128

約数の個数: 64

約数和(自身を含む): 668606400

約数和(自身を除く): 378548680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 109, 142, 218, 284, 355, 436, 545, 568, 710, 872, 937, 1090, 1420, 1874, 2180, 2840, 3748, 4360, 4685, 7496, 7739, 9370, 15478, 18740, 30956, 37480, 38695, 61912, 66527, 77390, 102133, 133054, 154780, 204266, 266108, 309560, 332635, 408532, 510665, 532216, 665270, 817064, 1021330, 1330540, 2042660, 2661080, 4085320, 7251443, 14502886, 29005772, 36257215, 58011544, 72514430, 145028860, 290057720]

約数ペア:

[(1, 290057720), (2, 145028860), (4, 72514430), (5, 58011544), (8, 36257215), (10, 29005772), (20, 14502886), (40, 7251443), (71, 4085320), (109, 2661080), (142, 2042660), (218, 1330540), (284, 1021330), (355, 817064), (436, 665270), (545, 532216), (568, 510665), (710, 408532), (872, 332635), (937, 309560), (1090, 266108), (1420, 204266), (1874, 154780), (2180, 133054), (2840, 102133), (3748, 77390), (4360, 66527), (4685, 61912), (7496, 38695), (7739, 37480), (9370, 30956), (15478, 18740)]