21017860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45691}}^1$

素因数の和:45723

約数の個数: 24

約数和(自身を含む): 46057536

約数和(自身を除く): 25039676

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45691, 91382, 182764, 228455, 456910, 913820, 1050893, 2101786, 4203572, 5254465, 10508930, 21017860]

約数ペア:

[(1, 21017860), (2, 10508930), (4, 5254465), (5, 4203572), (10, 2101786), (20, 1050893), (23, 913820), (46, 456910), (92, 228455), (115, 182764), (230, 91382), (460, 45691)]