212972015

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 266918400

約数和(自身を除く): 53946385

約数列:

[1, 5, 31, 127, 155, 349, 635, 961, 1745, 3937, 4805, 10819, 19685, 44323, 54095, 122047, 221615, 335389, 610235, 1374013, 1676945, 6870065, 42594403, 212972015]

約数ペア:

[(1, 212972015), (5, 42594403), (31, 6870065), (127, 1676945), (155, 1374013), (349, 610235), (635, 335389), (961, 221615), (1745, 122047), (3937, 54095), (4805, 44323), (10819, 19685)]