278519013

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{145289}}^1$

素因数の和:145369

約数の個数: 16

約数和(自身を含む): 418435200

約数和(自身を除く): 139916187

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 145289, 435867, 1307601, 3922803, 10315519, 30946557, 92839671, 278519013]

約数ペア:

[(1, 278519013), (3, 92839671), (9, 30946557), (27, 10315519), (71, 3922803), (213, 1307601), (639, 435867), (1917, 145289)]