21104505

素因数分解:

$3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1669}}^1$

素因数の和:1961

約数の個数: 24

約数和(自身を含む): 36733320

約数和(自身を除く): 15628815

約数列:

[1, 3, 5, 9, 15, 45, 281, 843, 1405, 1669, 2529, 4215, 5007, 8345, 12645, 15021, 25035, 75105, 468989, 1406967, 2344945, 4220901, 7034835, 21104505]

約数ペア:

[(1, 21104505), (3, 7034835), (5, 4220901), (9, 2344945), (15, 1406967), (45, 468989), (281, 75105), (843, 25035), (1405, 15021), (1669, 12645), (2529, 8345), (4215, 5007)]