18911776

素因数分解:

$2^5\times {\mathrm{13}}^3\times {\mathrm{269}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 40483800

約数和(自身を除く): 21572024

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 269, 338, 416, 538, 676, 1076, 1352, 2152, 2197, 2704, 3497, 4304, 4394, 5408, 6994, 8608, 8788, 13988, 17576, 27976, 35152, 45461, 55952, 70304, 90922, 111904, 181844, 363688, 590993, 727376, 1181986, 1454752, 2363972, 4727944, 9455888, 18911776]

約数ペア:

[(1, 18911776), (2, 9455888), (4, 4727944), (8, 2363972), (13, 1454752), (16, 1181986), (26, 727376), (32, 590993), (52, 363688), (104, 181844), (169, 111904), (208, 90922), (269, 70304), (338, 55952), (416, 45461), (538, 35152), (676, 27976), (1076, 17576), (1352, 13988), (2152, 8788), (2197, 8608), (2704, 6994), (3497, 5408), (4304, 4394)]