20987194

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{971}}^1$

素因数の和:1181

約数の個数: 16

約数和(自身を含む): 32122656

約数和(自身を除く): 11135462

約数列:

[1, 2, 101, 107, 202, 214, 971, 1942, 10807, 21614, 98071, 103897, 196142, 207794, 10493597, 20987194]

約数ペア:

[(1, 20987194), (2, 10493597), (101, 207794), (107, 196142), (202, 103897), (214, 98071), (971, 21614), (1942, 10807)]