208135487

素因数分解:

$7^4\times {\mathrm{23}}^1\times {\mathrm{3769}}^1$

素因数の和:3820

約数の個数: 20

約数和(自身を含む): 253434480

約数和(自身を除く): 45298993

約数列:

[1, 7, 23, 49, 161, 343, 1127, 2401, 3769, 7889, 26383, 55223, 86687, 184681, 606809, 1292767, 4247663, 9049369, 29733641, 208135487]

約数ペア:

[(1, 208135487), (7, 29733641), (23, 9049369), (49, 4247663), (161, 1292767), (343, 606809), (1127, 184681), (2401, 86687), (3769, 55223), (7889, 26383)]