81301040

素因数分解:

$2^4\times 5^1\times {\mathrm{1016263}}^1$

素因数の和:1016276

約数の個数: 20

約数和(自身を含む): 189025104

約数和(自身を除く): 107724064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1016263, 2032526, 4065052, 5081315, 8130104, 10162630, 16260208, 20325260, 40650520, 81301040]

約数ペア:

[(1, 81301040), (2, 40650520), (4, 20325260), (5, 16260208), (8, 10162630), (10, 8130104), (16, 5081315), (20, 4065052), (40, 2032526), (80, 1016263)]