28115840

素因数分解:

$2^7\times 5^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:439

約数の個数: 64

約数和(自身を含む): 67858560

約数和(自身を除く): 39742720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 223, 320, 394, 446, 640, 788, 892, 985, 1115, 1576, 1784, 1970, 2230, 3152, 3568, 3940, 4460, 6304, 7136, 7880, 8920, 12608, 14272, 15760, 17840, 25216, 28544, 31520, 35680, 43931, 63040, 71360, 87862, 126080, 142720, 175724, 219655, 351448, 439310, 702896, 878620, 1405792, 1757240, 2811584, 3514480, 5623168, 7028960, 14057920, 28115840]

約数ペア:

[(1, 28115840), (2, 14057920), (4, 7028960), (5, 5623168), (8, 3514480), (10, 2811584), (16, 1757240), (20, 1405792), (32, 878620), (40, 702896), (64, 439310), (80, 351448), (128, 219655), (160, 175724), (197, 142720), (223, 126080), (320, 87862), (394, 71360), (446, 63040), (640, 43931), (788, 35680), (892, 31520), (985, 28544), (1115, 25216), (1576, 17840), (1784, 15760), (1970, 14272), (2230, 12608), (3152, 8920), (3568, 7880), (3940, 7136), (4460, 6304)]