18815888

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12923}}^1$

素因数の和:12951

約数の個数: 40

約数和(自身を含む): 44872128

約数和(自身を除く): 26056240

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 12923, 25846, 51692, 90461, 103384, 167999, 180922, 206768, 335998, 361844, 671996, 723688, 1175993, 1343992, 1447376, 2351986, 2687984, 4703972, 9407944, 18815888]

約数ペア:

[(1, 18815888), (2, 9407944), (4, 4703972), (7, 2687984), (8, 2351986), (13, 1447376), (14, 1343992), (16, 1175993), (26, 723688), (28, 671996), (52, 361844), (56, 335998), (91, 206768), (104, 180922), (112, 167999), (182, 103384), (208, 90461), (364, 51692), (728, 25846), (1456, 12923)]