18977768257

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{419}}^1\times {\mathrm{40189}}^1$

素因数の和:40645

約数の個数: 24

約数和(自身を含む): 23091566400

約数和(自身を除く): 4113798143

約数列:

[1, 7, 23, 49, 161, 419, 1127, 2933, 9637, 20531, 40189, 67459, 281323, 472213, 924347, 1969261, 6470429, 16839191, 45293003, 117874337, 387301393, 825120359, 2711109751, 18977768257]

約数ペア:

[(1, 18977768257), (7, 2711109751), (23, 825120359), (49, 387301393), (161, 117874337), (419, 45293003), (1127, 16839191), (2933, 6470429), (9637, 1969261), (20531, 924347), (40189, 472213), (67459, 281323)]