13125760

素因数分解:

$2^7\times 5^1\times {\mathrm{20509}}^1$

素因数の和:20528

約数の個数: 32

約数和(自身を含む): 31380300

約数和(自身を除く): 18254540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20509, 41018, 82036, 102545, 164072, 205090, 328144, 410180, 656288, 820360, 1312576, 1640720, 2625152, 3281440, 6562880, 13125760]

約数ペア:

[(1, 13125760), (2, 6562880), (4, 3281440), (5, 2625152), (8, 1640720), (10, 1312576), (16, 820360), (20, 656288), (32, 410180), (40, 328144), (64, 205090), (80, 164072), (128, 102545), (160, 82036), (320, 41018), (640, 20509)]