18918796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{8461}}^1$

素因数の和:8521

約数の個数: 24

約数和(自身を含む): 36488144

約数和(自身を除く): 17569348

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 8461, 16922, 33844, 109993, 219986, 363823, 439972, 727646, 1455292, 4729699, 9459398, 18918796]

約数ペア:

[(1, 18918796), (2, 9459398), (4, 4729699), (13, 1455292), (26, 727646), (43, 439972), (52, 363823), (86, 219986), (172, 109993), (559, 33844), (1118, 16922), (2236, 8461)]