21381738

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{72727}}^1$

素因数の和:72746

約数の個数: 24

約数和(自身を含む): 49745952

約数和(自身を除く): 28364214

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 72727, 145454, 218181, 436362, 509089, 1018178, 1527267, 3054534, 3563623, 7127246, 10690869, 21381738]

約数ペア:

[(1, 21381738), (2, 10690869), (3, 7127246), (6, 3563623), (7, 3054534), (14, 1527267), (21, 1018178), (42, 509089), (49, 436362), (98, 218181), (147, 145454), (294, 72727)]