18545540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71329}}^1$

素因数の和:71351

約数の個数: 24

約数和(自身を含む): 41942040

約数和(自身を除く): 23396500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71329, 142658, 285316, 356645, 713290, 927277, 1426580, 1854554, 3709108, 4636385, 9272770, 18545540]

約数ペア:

[(1, 18545540), (2, 9272770), (4, 4636385), (5, 3709108), (10, 1854554), (13, 1426580), (20, 927277), (26, 713290), (52, 356645), (65, 285316), (130, 142658), (260, 71329)]