16978005

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:168

約数の個数: 80

約数和(自身を含む): 34429824

約数和(自身を除く): 17451819

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 37, 45, 55, 81, 99, 103, 111, 135, 165, 185, 297, 309, 333, 405, 407, 495, 515, 555, 891, 927, 999, 1133, 1221, 1485, 1545, 1665, 2035, 2781, 2997, 3399, 3663, 3811, 4455, 4635, 4995, 5665, 6105, 8343, 10197, 10989, 11433, 13905, 14985, 16995, 18315, 19055, 30591, 32967, 34299, 41715, 41921, 50985, 54945, 57165, 91773, 102897, 125763, 152955, 164835, 171495, 209605, 308691, 377289, 458865, 514485, 628815, 1131867, 1543455, 1886445, 3395601, 5659335, 16978005]

約数ペア:

[(1, 16978005), (3, 5659335), (5, 3395601), (9, 1886445), (11, 1543455), (15, 1131867), (27, 628815), (33, 514485), (37, 458865), (45, 377289), (55, 308691), (81, 209605), (99, 171495), (103, 164835), (111, 152955), (135, 125763), (165, 102897), (185, 91773), (297, 57165), (309, 54945), (333, 50985), (405, 41921), (407, 41715), (495, 34299), (515, 32967), (555, 30591), (891, 19055), (927, 18315), (999, 16995), (1133, 14985), (1221, 13905), (1485, 11433), (1545, 10989), (1665, 10197), (2035, 8343), (2781, 6105), (2997, 5665), (3399, 4995), (3663, 4635), (3811, 4455)]