21675478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4951}}^1$

素因数の和:5163

約数の個数: 16

約数和(自身を含む): 35654400

約数和(自身を除く): 13978922

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 4951, 9902, 54461, 108922, 985249, 1970498, 10837739, 21675478]

約数ペア:

[(1, 21675478), (2, 10837739), (11, 1970498), (22, 985249), (199, 108922), (398, 54461), (2189, 9902), (4378, 4951)]