2181235

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 3160080

約数和(自身を除く): 978845

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 307, 1015, 1421, 1535, 2149, 7105, 8903, 10745, 15043, 44515, 62321, 75215, 311605, 436247, 2181235]

約数ペア:

[(1, 2181235), (5, 436247), (7, 311605), (29, 75215), (35, 62321), (49, 44515), (145, 15043), (203, 10745), (245, 8903), (307, 7105), (1015, 2149), (1421, 1535)]