21509738

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9949}}^1$

素因数の和:10021

約数の個数: 16

約数和(自身を含む): 34387200

約数和(自身を除く): 12877462

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9949, 19898, 228827, 457654, 467603, 935206, 10754869, 21509738]

約数ペア:

[(1, 21509738), (2, 10754869), (23, 935206), (46, 467603), (47, 457654), (94, 228827), (1081, 19898), (2162, 9949)]