21526119

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 32248320

約数和(自身を除く): 10722201

約数列:

[1, 3, 9, 37, 111, 127, 333, 381, 509, 1143, 1527, 4581, 4699, 14097, 18833, 42291, 56499, 64643, 169497, 193929, 581787, 2391791, 7175373, 21526119]

約数ペア:

[(1, 21526119), (3, 7175373), (9, 2391791), (37, 581787), (111, 193929), (127, 169497), (333, 64643), (381, 56499), (509, 42291), (1143, 18833), (1527, 14097), (4581, 4699)]