21081579

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{1451}}^1$

素因数の和:1650

約数の個数: 16

約数和(自身を含む): 29272320

約数和(自身を除く): 8190741

約数列:

[1, 3, 29, 87, 167, 501, 1451, 4353, 4843, 14529, 42079, 126237, 242317, 726951, 7027193, 21081579]

約数ペア:

[(1, 21081579), (3, 7027193), (29, 726951), (87, 242317), (167, 126237), (501, 42079), (1451, 14529), (4353, 4843)]