21349690

素因数分解:

$2^1\times 5^1\times {\mathrm{571}}^1\times {\mathrm{3739}}^1$

素因数の和:4317

約数の個数: 16

約数和(自身を含む): 38507040

約数和(自身を除く): 17157350

約数列:

[1, 2, 5, 10, 571, 1142, 2855, 3739, 5710, 7478, 18695, 37390, 2134969, 4269938, 10674845, 21349690]

約数ペア:

[(1, 21349690), (2, 10674845), (5, 4269938), (10, 2134969), (571, 37390), (1142, 18695), (2855, 7478), (3739, 5710)]