19385905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1171}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 29703168

約数和(自身を除く): 10317263

約数列:

[1, 5, 7, 11, 35, 43, 55, 77, 215, 301, 385, 473, 1171, 1505, 2365, 3311, 5855, 8197, 12881, 16555, 40985, 50353, 64405, 90167, 251765, 352471, 450835, 553883, 1762355, 2769415, 3877181, 19385905]

約数ペア:

[(1, 19385905), (5, 3877181), (7, 2769415), (11, 1762355), (35, 553883), (43, 450835), (55, 352471), (77, 251765), (215, 90167), (301, 64405), (385, 50353), (473, 40985), (1171, 16555), (1505, 12881), (2365, 8197), (3311, 5855)]