21292749

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 32572800

約数和(自身を除く): 11280051

約数列:

[1, 3, 9, 19, 57, 171, 239, 521, 717, 1563, 2151, 4541, 4689, 9899, 13623, 29697, 40869, 89091, 124519, 373557, 1120671, 2365861, 7097583, 21292749]

約数ペア:

[(1, 21292749), (3, 7097583), (9, 2365861), (19, 1120671), (57, 373557), (171, 124519), (239, 89091), (521, 40869), (717, 29697), (1563, 13623), (2151, 9899), (4541, 4689)]