81376820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{581263}}^1$

素因数の和:581279

約数の個数: 24

約数和(自身を含む): 195304704

約数和(自身を除く): 113927884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 581263, 1162526, 2325052, 2906315, 4068841, 5812630, 8137682, 11625260, 16275364, 20344205, 40688410, 81376820]

約数ペア:

[(1, 81376820), (2, 40688410), (4, 20344205), (5, 16275364), (7, 11625260), (10, 8137682), (14, 5812630), (20, 4068841), (28, 2906315), (35, 2325052), (70, 1162526), (140, 581263)]