28561840

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1601}}^1$

素因数の和:1837

約数の個数: 40

約数和(自身を含む): 66745728

約数和(自身を除く): 38183888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1601, 1784, 2230, 3202, 3568, 4460, 6404, 8005, 8920, 12808, 16010, 17840, 25616, 32020, 64040, 128080, 357023, 714046, 1428092, 1785115, 2856184, 3570230, 5712368, 7140460, 14280920, 28561840]

約数ペア:

[(1, 28561840), (2, 14280920), (4, 7140460), (5, 5712368), (8, 3570230), (10, 2856184), (16, 1785115), (20, 1428092), (40, 714046), (80, 357023), (223, 128080), (446, 64040), (892, 32020), (1115, 25616), (1601, 17840), (1784, 16010), (2230, 12808), (3202, 8920), (3568, 8005), (4460, 6404)]