16890640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 42966000

約数和(自身を除く): 26075360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 109, 130, 149, 208, 218, 260, 298, 436, 520, 545, 596, 745, 872, 1040, 1090, 1192, 1417, 1490, 1744, 1937, 2180, 2384, 2834, 2980, 3874, 4360, 5668, 5960, 7085, 7748, 8720, 9685, 11336, 11920, 14170, 15496, 16241, 19370, 22672, 28340, 30992, 32482, 38740, 56680, 64964, 77480, 81205, 113360, 129928, 154960, 162410, 211133, 259856, 324820, 422266, 649640, 844532, 1055665, 1299280, 1689064, 2111330, 3378128, 4222660, 8445320, 16890640]

約数ペア:

[(1, 16890640), (2, 8445320), (4, 4222660), (5, 3378128), (8, 2111330), (10, 1689064), (13, 1299280), (16, 1055665), (20, 844532), (26, 649640), (40, 422266), (52, 324820), (65, 259856), (80, 211133), (104, 162410), (109, 154960), (130, 129928), (149, 113360), (208, 81205), (218, 77480), (260, 64964), (298, 56680), (436, 38740), (520, 32482), (545, 30992), (596, 28340), (745, 22672), (872, 19370), (1040, 16241), (1090, 15496), (1192, 14170), (1417, 11920), (1490, 11336), (1744, 9685), (1937, 8720), (2180, 7748), (2384, 7085), (2834, 5960), (2980, 5668), (3874, 4360)]