20715605

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 7485355

約数列:

[1, 5, 17, 19, 85, 95, 101, 127, 323, 505, 635, 1615, 1717, 1919, 2159, 2413, 8585, 9595, 10795, 12065, 12827, 32623, 41021, 64135, 163115, 205105, 218059, 243713, 1090295, 1218565, 4143121, 20715605]

約数ペア:

[(1, 20715605), (5, 4143121), (17, 1218565), (19, 1090295), (85, 243713), (95, 218059), (101, 205105), (127, 163115), (323, 64135), (505, 41021), (635, 32623), (1615, 12827), (1717, 12065), (1919, 10795), (2159, 9595), (2413, 8585)]