21284008

素因数分解:

$2^3\times {\mathrm{523}}^1\times {\mathrm{5087}}^1$

素因数の和:5616

約数の個数: 16

約数和(自身を含む): 39991680

約数和(自身を除く): 18707672

約数列:

[1, 2, 4, 8, 523, 1046, 2092, 4184, 5087, 10174, 20348, 40696, 2660501, 5321002, 10642004, 21284008]

約数ペア:

[(1, 21284008), (2, 10642004), (4, 5321002), (8, 2660501), (523, 40696), (1046, 20348), (2092, 10174), (4184, 5087)]