18902079

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:126

約数の個数: 80

約数和(自身を含む): 35754048

約数和(自身を除く): 16851969

約数列:

[1, 3, 7, 9, 17, 21, 27, 37, 51, 53, 63, 81, 111, 119, 153, 159, 189, 259, 333, 357, 371, 459, 477, 567, 629, 777, 901, 999, 1071, 1113, 1377, 1431, 1887, 1961, 2331, 2703, 2997, 3213, 3339, 4293, 4403, 5661, 5883, 6307, 6993, 8109, 9639, 10017, 13209, 13727, 16983, 17649, 18921, 20979, 24327, 30051, 33337, 39627, 41181, 50949, 52947, 56763, 72981, 100011, 118881, 123543, 158841, 170289, 233359, 300033, 356643, 370629, 510867, 700077, 900099, 1111887, 2100231, 2700297, 6300693, 18902079]

約数ペア:

[(1, 18902079), (3, 6300693), (7, 2700297), (9, 2100231), (17, 1111887), (21, 900099), (27, 700077), (37, 510867), (51, 370629), (53, 356643), (63, 300033), (81, 233359), (111, 170289), (119, 158841), (153, 123543), (159, 118881), (189, 100011), (259, 72981), (333, 56763), (357, 52947), (371, 50949), (459, 41181), (477, 39627), (567, 33337), (629, 30051), (777, 24327), (901, 20979), (999, 18921), (1071, 17649), (1113, 16983), (1377, 13727), (1431, 13209), (1887, 10017), (1961, 9639), (2331, 8109), (2703, 6993), (2997, 6307), (3213, 5883), (3339, 5661), (4293, 4403)]