81376540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{581261}}^1$

素因数の和:581277

約数の個数: 24

約数和(自身を含む): 195304032

約数和(自身を除く): 113927492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 581261, 1162522, 2325044, 2906305, 4068827, 5812610, 8137654, 11625220, 16275308, 20344135, 40688270, 81376540]

約数ペア:

[(1, 81376540), (2, 40688270), (4, 20344135), (5, 16275308), (7, 11625220), (10, 8137654), (14, 5812610), (20, 4068827), (28, 2906305), (35, 2325044), (70, 1162522), (140, 581261)]