2104020080

素因数分解:

$2^4\times 5^1\times {\mathrm{26300251}}^1$

素因数の和:26300264

約数の個数: 20

約数和(自身を含む): 4891846872

約数和(自身を除く): 2787826792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 26300251, 52600502, 105201004, 131501255, 210402008, 263002510, 420804016, 526005020, 1052010040, 2104020080]

約数ペア:

[(1, 2104020080), (2, 1052010040), (4, 526005020), (5, 420804016), (8, 263002510), (10, 210402008), (16, 131501255), (20, 105201004), (40, 52600502), (80, 26300251)]