20879537

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{547}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 26238240

約数和(自身を除く): 5358703

約数列:

[1, 7, 19, 41, 49, 133, 287, 547, 779, 931, 2009, 3829, 5453, 10393, 22427, 26803, 38171, 72751, 156989, 426113, 509257, 1098923, 2982791, 20879537]

約数ペア:

[(1, 20879537), (7, 2982791), (19, 1098923), (41, 509257), (49, 426113), (133, 156989), (287, 72751), (547, 38171), (779, 26803), (931, 22427), (2009, 10393), (3829, 5453)]