21507009

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{5749}}^1$

素因数の和:5824

約数の個数: 16

約数和(自身を含む): 30360000

約数和(自身を除く): 8852991

約数列:

[1, 3, 29, 43, 87, 129, 1247, 3741, 5749, 17247, 166721, 247207, 500163, 741621, 7169003, 21507009]

約数ペア:

[(1, 21507009), (3, 7169003), (29, 741621), (43, 500163), (87, 247207), (129, 166721), (1247, 17247), (3741, 5749)]