21046431

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{4937}}^1$

素因数の和:4983

約数の個数: 24

約数和(自身を含む): 33775920

約数和(自身を除く): 12729489

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 4937, 14811, 34559, 103677, 143173, 241913, 429519, 725739, 1002211, 3006633, 7015477, 21046431]

約数ペア:

[(1, 21046431), (3, 7015477), (7, 3006633), (21, 1002211), (29, 725739), (49, 429519), (87, 241913), (147, 143173), (203, 103677), (609, 34559), (1421, 14811), (4263, 4937)]