21421880

素因数分解:

$2^3\times 5^1\times {\mathrm{535547}}^1$

素因数の和:535558

約数の個数: 16

約数和(自身を含む): 48199320

約数和(自身を除く): 26777440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 535547, 1071094, 2142188, 2677735, 4284376, 5355470, 10710940, 21421880]

約数ペア:

[(1, 21421880), (2, 10710940), (4, 5355470), (5, 4284376), (8, 2677735), (10, 2142188), (20, 1071094), (40, 535547)]