18685737

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 33246720

約数和(自身を除く): 14560983

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 73, 119, 153, 219, 239, 357, 511, 657, 717, 1071, 1241, 1533, 1673, 2151, 3723, 4063, 4599, 5019, 8687, 11169, 12189, 15057, 17447, 26061, 28441, 36567, 52341, 78183, 85323, 122129, 157023, 255969, 296599, 366387, 889797, 1099161, 2076193, 2669391, 6228579, 18685737]

約数ペア:

[(1, 18685737), (3, 6228579), (7, 2669391), (9, 2076193), (17, 1099161), (21, 889797), (51, 366387), (63, 296599), (73, 255969), (119, 157023), (153, 122129), (219, 85323), (239, 78183), (357, 52341), (511, 36567), (657, 28441), (717, 26061), (1071, 17447), (1241, 15057), (1533, 12189), (1673, 11169), (2151, 8687), (3723, 5019), (4063, 4599)]