18138520

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{829}}^1$

素因数の和:1387

約数の個数: 32

約数和(自身を含む): 40935600

約数和(自身を除く): 22797080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 829, 1094, 1658, 2188, 2735, 3316, 4145, 4376, 5470, 6632, 8290, 10940, 16580, 21880, 33160, 453463, 906926, 1813852, 2267315, 3627704, 4534630, 9069260, 18138520]

約数ペア:

[(1, 18138520), (2, 9069260), (4, 4534630), (5, 3627704), (8, 2267315), (10, 1813852), (20, 906926), (40, 453463), (547, 33160), (829, 21880), (1094, 16580), (1658, 10940), (2188, 8290), (2735, 6632), (3316, 5470), (4145, 4376)]