12981040

素因数分解:

$2^4\times 5^1\times {\mathrm{162263}}^1$

素因数の和:162276

約数の個数: 20

約数和(自身を含む): 30181104

約数和(自身を除く): 17200064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 162263, 324526, 649052, 811315, 1298104, 1622630, 2596208, 3245260, 6490520, 12981040]

約数ペア:

[(1, 12981040), (2, 6490520), (4, 3245260), (5, 2596208), (8, 1622630), (10, 1298104), (16, 811315), (20, 649052), (40, 324526), (80, 162263)]