8445320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 20790000

約数和(自身を除く): 12344680

約数列:

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

約数ペア:

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