19999688

素因数分解:

$2^3\times {\mathrm{541}}^1\times {\mathrm{4621}}^1$

素因数の和:5168

約数の個数: 16

約数和(自身を含む): 37576860

約数和(自身を除く): 17577172

約数列:

[1, 2, 4, 8, 541, 1082, 2164, 4328, 4621, 9242, 18484, 36968, 2499961, 4999922, 9999844, 19999688]

約数ペア:

[(1, 19999688), (2, 9999844), (4, 4999922), (8, 2499961), (541, 36968), (1082, 18484), (2164, 9242), (4328, 4621)]