21063080

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1901}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 47588040

約数和(自身を除く): 26524960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 1901, 2216, 2770, 3802, 5540, 7604, 9505, 11080, 15208, 19010, 38020, 76040, 526577, 1053154, 2106308, 2632885, 4212616, 5265770, 10531540, 21063080]

約数ペア:

[(1, 21063080), (2, 10531540), (4, 5265770), (5, 4212616), (8, 2632885), (10, 2106308), (20, 1053154), (40, 526577), (277, 76040), (554, 38020), (1108, 19010), (1385, 15208), (1901, 11080), (2216, 9505), (2770, 7604), (3802, 5540)]