18515115

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 35251200

約数和(自身を除く): 16736085

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 67, 69, 89, 115, 135, 201, 207, 267, 335, 345, 445, 603, 621, 801, 1005, 1035, 1335, 1541, 1809, 2047, 2403, 3015, 3105, 4005, 4623, 5963, 6141, 7705, 9045, 10235, 12015, 13869, 17889, 18423, 23115, 29815, 30705, 41607, 53667, 55269, 69345, 89445, 92115, 137149, 161001, 208035, 268335, 276345, 411447, 685745, 805005, 1234341, 2057235, 3703023, 6171705, 18515115]

約数ペア:

[(1, 18515115), (3, 6171705), (5, 3703023), (9, 2057235), (15, 1234341), (23, 805005), (27, 685745), (45, 411447), (67, 276345), (69, 268335), (89, 208035), (115, 161001), (135, 137149), (201, 92115), (207, 89445), (267, 69345), (335, 55269), (345, 53667), (445, 41607), (603, 30705), (621, 29815), (801, 23115), (1005, 18423), (1035, 17889), (1335, 13869), (1541, 12015), (1809, 10235), (2047, 9045), (2403, 7705), (3015, 6141), (3105, 5963), (4005, 4623)]