19194920

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1543}}^1$

素因数の和:1865

約数の個数: 32

約数和(自身を含む): 43355520

約数和(自身を除く): 24160600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1543, 1555, 2488, 3086, 3110, 6172, 6220, 7715, 12344, 12440, 15430, 30860, 61720, 479873, 959746, 1919492, 2399365, 3838984, 4798730, 9597460, 19194920]

約数ペア:

[(1, 19194920), (2, 9597460), (4, 4798730), (5, 3838984), (8, 2399365), (10, 1919492), (20, 959746), (40, 479873), (311, 61720), (622, 30860), (1244, 15430), (1543, 12440), (1555, 12344), (2488, 7715), (3086, 6220), (3110, 6172)]