18216639

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 32415552

約数和(自身を除く): 14198913

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 73, 119, 153, 219, 233, 357, 511, 657, 699, 1071, 1241, 1533, 1631, 2097, 3723, 3961, 4599, 4893, 8687, 11169, 11883, 14679, 17009, 26061, 27727, 35649, 51027, 78183, 83181, 119063, 153081, 249543, 289153, 357189, 867459, 1071567, 2024071, 2602377, 6072213, 18216639]

約数ペア:

[(1, 18216639), (3, 6072213), (7, 2602377), (9, 2024071), (17, 1071567), (21, 867459), (51, 357189), (63, 289153), (73, 249543), (119, 153081), (153, 119063), (219, 83181), (233, 78183), (357, 51027), (511, 35649), (657, 27727), (699, 26061), (1071, 17009), (1241, 14679), (1533, 11883), (1631, 11169), (2097, 8687), (3723, 4893), (3961, 4599)]