21428060

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1277}}^1$

素因数の和:2125

約数の個数: 24

約数和(自身を含む): 45087840

約数和(自身を除く): 23659780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1277, 1678, 2554, 3356, 4195, 5108, 6385, 8390, 12770, 16780, 25540, 1071403, 2142806, 4285612, 5357015, 10714030, 21428060]

約数ペア:

[(1, 21428060), (2, 10714030), (4, 5357015), (5, 4285612), (10, 2142806), (20, 1071403), (839, 25540), (1277, 16780), (1678, 12770), (2554, 8390), (3356, 6385), (4195, 5108)]