397458

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:390

約数の個数: 24

約数和(自身を含む): 876096

約数和(自身を除く): 478638

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 311, 426, 622, 639, 933, 1278, 1866, 2799, 5598, 22081, 44162, 66243, 132486, 198729, 397458]

約数ペア:

[(1, 397458), (2, 198729), (3, 132486), (6, 66243), (9, 44162), (18, 22081), (71, 5598), (142, 2799), (213, 1866), (311, 1278), (426, 933), (622, 639)]