128732720

素因数分解:

$2^4\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1451}}^1$

素因数の和:2573

約数の個数: 40

約数和(自身を含む): 299779920

約数和(自身を除く): 171047200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1109, 1451, 2218, 2902, 4436, 5545, 5804, 7255, 8872, 11090, 11608, 14510, 17744, 22180, 23216, 29020, 44360, 58040, 88720, 116080, 1609159, 3218318, 6436636, 8045795, 12873272, 16091590, 25746544, 32183180, 64366360, 128732720]

約数ペア:

[(1, 128732720), (2, 64366360), (4, 32183180), (5, 25746544), (8, 16091590), (10, 12873272), (16, 8045795), (20, 6436636), (40, 3218318), (80, 1609159), (1109, 116080), (1451, 88720), (2218, 58040), (2902, 44360), (4436, 29020), (5545, 23216), (5804, 22180), (7255, 17744), (8872, 14510), (11090, 11608)]