78420321

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{42923}}^1$

素因数の和:42965

約数の個数: 24

約数和(自身を含む): 133922880

約数和(自身を除く): 55502559

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 42923, 128769, 300461, 386307, 901383, 1244767, 2704149, 3734301, 8713369, 11202903, 26140107, 78420321]

約数ペア:

[(1, 78420321), (3, 26140107), (7, 11202903), (9, 8713369), (21, 3734301), (29, 2704149), (63, 1244767), (87, 901383), (203, 386307), (261, 300461), (609, 128769), (1827, 42923)]