19712231

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^2$

素因数の和:120

約数の個数: 36

約数和(自身を含む): 26946864

約数和(自身を除く): 7234633

約数列:

[1, 7, 11, 17, 37, 77, 119, 121, 187, 259, 407, 629, 847, 1309, 1369, 2057, 2849, 4403, 4477, 6919, 9583, 14399, 15059, 23273, 31339, 48433, 76109, 105413, 162911, 165649, 256003, 532763, 1159543, 1792021, 2816033, 19712231]

約数ペア:

[(1, 19712231), (7, 2816033), (11, 1792021), (17, 1159543), (37, 532763), (77, 256003), (119, 165649), (121, 162911), (187, 105413), (259, 76109), (407, 48433), (629, 31339), (847, 23273), (1309, 15059), (1369, 14399), (2057, 9583), (2849, 6919), (4403, 4477)]