12901040

素因数分解:

$2^4\times 5^1\times {\mathrm{161263}}^1$

素因数の和:161276

約数の個数: 20

約数和(自身を含む): 29995104

約数和(自身を除く): 17094064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161263, 322526, 645052, 806315, 1290104, 1612630, 2580208, 3225260, 6450520, 12901040]

約数ペア:

[(1, 12901040), (2, 6450520), (4, 3225260), (5, 2580208), (8, 1612630), (10, 1290104), (16, 806315), (20, 645052), (40, 322526), (80, 161263)]