28383760

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1801}}^1$

素因数の和:2011

約数の個数: 40

約数和(自身を含む): 66364056

約数和(自身を除く): 37980296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1801, 1970, 3152, 3602, 3940, 7204, 7880, 9005, 14408, 15760, 18010, 28816, 36020, 72040, 144080, 354797, 709594, 1419188, 1773985, 2838376, 3547970, 5676752, 7095940, 14191880, 28383760]

約数ペア:

[(1, 28383760), (2, 14191880), (4, 7095940), (5, 5676752), (8, 3547970), (10, 2838376), (16, 1773985), (20, 1419188), (40, 709594), (80, 354797), (197, 144080), (394, 72040), (788, 36020), (985, 28816), (1576, 18010), (1801, 15760), (1970, 14408), (3152, 9005), (3602, 7880), (3940, 7204)]