18988269

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{5557}}^1$

素因数の和:5644

約数の個数: 16

約数和(自身を含む): 27211968

約数和(自身を除く): 8223699

約数列:

[1, 3, 17, 51, 67, 201, 1139, 3417, 5557, 16671, 94469, 283407, 372319, 1116957, 6329423, 18988269]

約数ペア:

[(1, 18988269), (3, 6329423), (17, 1116957), (51, 372319), (67, 283407), (201, 94469), (1139, 16671), (3417, 5557)]