21077973

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17609}}^1$

素因数の和:17641

約数の個数: 24

約数和(自身を含む): 36628800

約数和(自身を除く): 15550827

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17609, 52827, 123263, 158481, 334571, 369789, 1003713, 1109367, 2341997, 3011139, 7025991, 21077973]

約数ペア:

[(1, 21077973), (3, 7025991), (7, 3011139), (9, 2341997), (19, 1109367), (21, 1003713), (57, 369789), (63, 334571), (133, 158481), (171, 123263), (399, 52827), (1197, 17609)]