20371760

素因数分解:

$2^4\times 5^1\times {\mathrm{254647}}^1$

素因数の和:254660

約数の個数: 20

約数和(自身を含む): 47364528

約数和(自身を除く): 26992768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254647, 509294, 1018588, 1273235, 2037176, 2546470, 4074352, 5092940, 10185880, 20371760]

約数ペア:

[(1, 20371760), (2, 10185880), (4, 5092940), (5, 4074352), (8, 2546470), (10, 2037176), (16, 1273235), (20, 1018588), (40, 509294), (80, 254647)]