18796840

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1511}}^1$

素因数の和:1833

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 23660120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1511, 1555, 2488, 3022, 3110, 6044, 6220, 7555, 12088, 12440, 15110, 30220, 60440, 469921, 939842, 1879684, 2349605, 3759368, 4699210, 9398420, 18796840]

約数ペア:

[(1, 18796840), (2, 9398420), (4, 4699210), (5, 3759368), (8, 2349605), (10, 1879684), (20, 939842), (40, 469921), (311, 60440), (622, 30220), (1244, 15110), (1511, 12440), (1555, 12088), (2488, 7555), (3022, 6220), (3110, 6044)]