21336520

素因数分解:

$2^3\times 5^1\times {\mathrm{533413}}^1$

素因数の和:533424

約数の個数: 16

約数和(自身を含む): 48007260

約数和(自身を除く): 26670740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 533413, 1066826, 2133652, 2667065, 4267304, 5334130, 10668260, 21336520]

約数ペア:

[(1, 21336520), (2, 10668260), (4, 5334130), (5, 4267304), (8, 2667065), (10, 2133652), (20, 1066826), (40, 533413)]